16004864 has 36 divisors (see below), whose sum is σ = 32315640. Its totient is φ = 7910400.

The previous prime is 16004851. The next prime is 16004869. The reversal of 16004864 is 46840061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16004869) 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, 25547 + ... + 26165.

Almost surely, 2^16004864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16004864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16157820).

16004864 is an abundant number, since it is smaller than the sum of its proper divisors (16310776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16004864 is an equidigital number, since it uses as much as digits as its factorization.

16004864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 16004864 is about 4000.6079537990. The cubic root of 16004864 is about 252.0097417919.

The spelling of 16004864 in words is "sixteen million, four thousand, eight hundred sixty-four".