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205912002 = 23891672309
BaseRepresentation
bin11000100010111…
…11011111000010
3112100110102011110
430101133133002
5410203141002
632233224150
75050136352
oct1421373702
9470412143
10205912002
11a626080a
1258b62056
133387722a
141d4c0b62
1513125e6c
hexc45f7c2

205912002 has 32 divisors (see below), whose sum is σ = 419126400. Its totient is φ = 67430528.

The previous prime is 205911983. The next prime is 205912037. The reversal of 205912002 is 200219502.

It is a self number, because there is not a number n which added to its sum of digits gives 205912002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88024 + ... + 90332.

It is an arithmetic number, because the mean of its divisors is an integer number (13097700).

Almost surely, 2205912002 is an apocalyptic number.

205912002 is an abundant number, since it is smaller than the sum of its proper divisors (213214398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205912002 is a wasteful number, since it uses less digits than its factorization.

205912002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 205912002 is about 14349.6342113658. The cubic root of 205912002 is about 590.5099507606.

The spelling of 205912002 in words is "two hundred five million, nine hundred twelve thousand, two".

Divisors: 1 2 3 6 89 167 178 267 334 501 534 1002 2309 4618 6927 13854 14863 29726 44589 89178 205501 385603 411002 616503 771206 1156809 1233006 2313618 34318667 68637334 102956001 205912002