204156512 has 24 divisors (see below), whose sum is σ = 459352656. Its totient is φ = 87495552.

The previous prime is 204156503. The next prime is 204156521. The reversal of 204156512 is 215651402.

It is an interprime number because it is at equal distance from previous prime (204156503) and next prime (204156521).

It is a super-2 number, since 2×204156512² = 83359762784012288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455483 + ... + 455930.

It is an arithmetic number, because the mean of its divisors is an integer number (19139694).

Almost surely, 2^204156512 is an apocalyptic number.

It is an amenable number.

204156512 is an abundant number, since it is smaller than the sum of its proper divisors (255196144).

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

204156512 is an equidigital number, since it uses as much as digits as its factorization.

204156512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911430 (or 911422 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 204156512 is about 14288.3348225047. The cubic root of 204156512 is about 588.8270404937.

The spelling of 204156512 in words is "two hundred four million, one hundred fifty-six thousand, five hundred twelve".