204201864 has 64 divisors (see below), whose sum is σ = 568425600. Its totient is φ = 67923648.

The previous prime is 204201817. The next prime is 204201871. The reversal of 204201864 is 468102402.

It is a super-2 number, since 2×204201864² = 83396802522148992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 166357 + ... + 167579.

It is an arithmetic number, because the mean of its divisors is an integer number (8881650).

Almost surely, 2^204201864 is an apocalyptic number.

204201864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

204201864 is an abundant number, since it is smaller than the sum of its proper divisors (364223736).

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

204201864 is a wasteful number, since it uses less digits than its factorization.

204201864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011 (or 2001 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 204201864 is about 14289.9217632568. The cubic root of 204201864 is about 588.8706385916.

The spelling of 204201864 in words is "two hundred four million, two hundred one thousand, eight hundred sixty-four".