216326504 has 8 divisors (see below), whose sum is σ = 405612210. Its totient is φ = 108163248.

The previous prime is 216326489. The next prime is 216326543. The reversal of 216326504 is 405623612.

It can be written as a sum of positive squares in only one way, i.e., 114276100 + 102050404 = 10690^2 + 10102^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13520399 + ... + 13520414.

Almost surely, 2^216326504 is an apocalyptic number.

It is an amenable number.

216326504 is a deficient number, since it is larger than the sum of its proper divisors (189285706).

216326504 is a wasteful number, since it uses less digits than its factorization.

216326504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27040819 (or 27040815 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 216326504 is about 14708.0421538694. The cubic root of 216326504 is about 600.3021663188.

The spelling of 216326504 in words is "two hundred sixteen million, three hundred twenty-six thousand, five hundred four".