213632904 has 32 divisors (see below), whose sum is σ = 551312640. Its totient is φ = 68913600.

The previous prime is 213632891. The next prime is 213632911. The reversal of 213632904 is 409236312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142827 + ... + 144314.

It is an arithmetic number, because the mean of its divisors is an integer number (17228520).

Almost surely, 2^213632904 is an apocalyptic number.

213632904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213632904 is an abundant number, since it is smaller than the sum of its proper divisors (337679736).

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

213632904 is a wasteful number, since it uses less digits than its factorization.

213632904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287181 (or 287177 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 213632904 is about 14616.1863699120. The cubic root of 213632904 is about 597.8001890206.

The spelling of 213632904 in words is "two hundred thirteen million, six hundred thirty-two thousand, nine hundred four".