Igor Rotenberg Igor Rotenberg Igor Rotenberg, () is a Russian billionaire businessman and the oldest son and heir to Arkady Rotenberg, Russian billionaire businessman and co-owner with brother Boris Rotenberg, of the SGM (Stroygazmontazh) group. The Rotenberg's are closely associated with Vladimir Putin. In October 2018, Igor Rotenberg's wealth is estimated to be $1.1 billion. Igor Rotenberg has been under United States sanctions since 6 April 2018. Igor is the majority shareholder in Gazprom Drilling. Igor Rotenberg was born on 9 September 1974 in Leningrad to Arkady Rotenberg. In 2002, he graduated from the Higher School of Privatization and Entrepreneurship () in
Rotenberg (hills) the Rhume and Eller rivers in the south. These rivers and the small streams that rise in the hills belong to the catchment area of the Leine, several kilometres to the west. The hills in and near the Rotenberg include the: Rotenberg (hills) The Rotenberg is a hill range, up to 317.3 m high, in the Lower Saxon Hills in southeastern Lower Saxony, Germany. The Rotenberg ridge is oriented northwest-southeast and measures about 14 kilometres long by 2 kilometres wide. It lies in the district of Göttingen in the southeastern corner of the Lower Saxon Hills. It is located on