16904864 has 24 divisors (see below), whose sum is σ = 33373620. Its totient is φ = 8429056.

The previous prime is 16904863. The next prime is 16904873. The reversal of 16904864 is 46840961.

It can be written as a sum of positive squares in 2 ways, for example, as 16810000 + 94864 = 4100^2 + 308^2 .

It is not an unprimeable number, because it can be changed into a prime (16904861) 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, 20492 + ... + 21300.

Almost surely, 2^16904864 is an apocalyptic number.

It is an amenable number.

16904864 is a deficient number, since it is larger than the sum of its proper divisors (16468756).

16904864 is an equidigital number, since it uses as much as digits as its factorization.

16904864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 16904864 is about 4111.5525048332. The cubic root of 16904864 is about 256.6476116361.

The spelling of 16904864 in words is "sixteen million, nine hundred four thousand, eight hundred sixty-four".