216879004 has 12 divisors (see below), whose sum is σ = 379658664. Its totient is φ = 108405104.

The previous prime is 216878999. The next prime is 216879011. The reversal of 216879004 is 400978612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10107 + ... + 23149.

It is an arithmetic number, because the mean of its divisors is an integer number (31638222).

Almost surely, 2^216879004 is an apocalyptic number.

It is an amenable number.

216879004 is a deficient number, since it is larger than the sum of its proper divisors (162779660).

216879004 is a wasteful number, since it uses less digits than its factorization.

216879004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17204 (or 17202 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 216879004 is about 14726.8124181712. The cubic root of 216879004 is about 600.8127910466.

The spelling of 216879004 in words is "two hundred sixteen million, eight hundred seventy-nine thousand, four".