216634204 has 12 divisors (see below), whose sum is σ = 380257528. Its totient is φ = 107989200.

The previous prime is 216634199. The next prime is 216634207. The reversal of 216634204 is 402436612.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216634207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80487 + ... + 83134.

Almost surely, 2^216634204 is an apocalyptic number.

It is an amenable number.

216634204 is a deficient number, since it is larger than the sum of its proper divisors (163623324).

216634204 is a wasteful number, since it uses less digits than its factorization.

216634204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163956 (or 163954 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 216634204 is about 14718.4987006148. The cubic root of 216634204 is about 600.5866521378.

The spelling of 216634204 in words is "two hundred sixteen million, six hundred thirty-four thousand, two hundred four".