16920004 has 12 divisors (see below), whose sum is σ = 29716624. Its totient is φ = 8429544.

The previous prime is 16919999. The next prime is 16920011. The reversal of 16920004 is 40002961.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6342 + ... + 8605.

Almost surely, 2^16920004 is an apocalyptic number.

It is an amenable number.

16920004 is a deficient number, since it is larger than the sum of its proper divisors (12796620).

16920004 is a wasteful number, since it uses less digits than its factorization.

16920004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15234 (or 15232 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 16920004 is about 4113.3932464572. The cubic root of 16920004 is about 256.7242066607.

Adding to 16920004 its reverse (40002961), we get a palindrome (56922965).

The spelling of 16920004 in words is "sixteen million, nine hundred twenty thousand, four".