204687972 has 30 divisors (see below), whose sum is σ = 535095638. Its totient is φ = 68229216.

The previous prime is 204687953. The next prime is 204687983. The reversal of 204687972 is 279786402.

It can be written as a sum of positive squares in only one way, i.e., 203233536 + 1454436 = 14256^2 + 1206^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 315553 + ... + 316200.

Almost surely, 2^204687972 is an apocalyptic number.

It is an amenable number.

204687972 is an abundant number, since it is smaller than the sum of its proper divisors (330407666).

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

204687972 is a wasteful number, since it uses less digits than its factorization.

204687972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631769 (or 631758 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 204687972 is about 14306.9204233476. The cubic root of 204687972 is about 589.3375423979.

The spelling of 204687972 in words is "two hundred four million, six hundred eighty-seven thousand, nine hundred seventy-two".