204651156 has 24 divisors (see below), whose sum is σ = 479384640. Its totient is φ = 67950592.

The previous prime is 204651143. The next prime is 204651163. The reversal of 204651156 is 651156402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30096 + ... + 36263.

It is an arithmetic number, because the mean of its divisors is an integer number (19974360).

Almost surely, 2^204651156 is an apocalyptic number.

It is an amenable number.

204651156 is an abundant number, since it is smaller than the sum of its proper divisors (274733484).

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

204651156 is a wasteful number, since it uses less digits than its factorization.

204651156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66623 (or 66621 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 204651156 is about 14305.6337154283. The cubic root of 204651156 is about 589.3022067408.

The spelling of 204651156 in words is "two hundred four million, six hundred fifty-one thousand, one hundred fifty-six".