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20120202930 = 2351016640331
BaseRepresentation
bin10010101111010000…
…011110111010110010
31220221012201012200010
4102233100132322302
5312201232443210
613124301435350
71311411621522
oct225720367262
956835635603
1020120202930
11859536a293
123a9626bb56
131b88573029
14d8c255682
157cb5b1920
hex4af41eeb2

20120202930 has 32 divisors (see below), whose sum is σ = 48766598208. Its totient is φ = 5312264000.

The previous prime is 20120202917. The next prime is 20120202943. The reversal of 20120202930 is 3920202102.

It is an interprime number because it is at equal distance from previous prime (20120202917) and next prime (20120202943).

It is a super-3 number, since 3×201202029303 (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20120202897 and 20120202906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3317136 + ... + 3323195.

It is an arithmetic number, because the mean of its divisors is an integer number (1523956194).

Almost surely, 220120202930 is an apocalyptic number.

20120202930 is an abundant number, since it is smaller than the sum of its proper divisors (28646395278).

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

20120202930 is a wasteful number, since it uses less digits than its factorization.

20120202930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6640442.

The product of its (nonzero) digits is 432, while the sum is 21.

The spelling of 20120202930 in words is "twenty billion, one hundred twenty million, two hundred two thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 101 202 303 505 606 1010 1515 3030 6640331 13280662 19920993 33201655 39841986 66403310 99604965 199209930 670673431 1341346862 2012020293 3353367155 4024040586 6706734310 10060101465 20120202930