216432604 has 12 divisors (see below), whose sum is σ = 387995328. Its totient is φ = 105576800.

The previous prime is 216432589. The next prime is 216432613. The reversal of 216432604 is 406234612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659692 + ... + 660019.

It is an arithmetic number, because the mean of its divisors is an integer number (32332944).

Almost surely, 2^216432604 is an apocalyptic number.

It is an amenable number.

216432604 is a deficient number, since it is larger than the sum of its proper divisors (171562724).

216432604 is a wasteful number, since it uses less digits than its factorization.

216432604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319756 (or 1319754 counting only the distinct ones).

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

The square root of 216432604 is about 14711.6485819911. The cubic root of 216432604 is about 600.4002921435.

The spelling of 216432604 in words is "two hundred sixteen million, four hundred thirty-two thousand, six hundred four".