12564320 has 48 divisors (see below), whose sum is σ = 31253040. Its totient is φ = 4760064.

The previous prime is 12564319. The next prime is 12564347. The reversal of 12564320 is 2346521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974 + ... + 5106.

It is an arithmetic number, because the mean of its divisors is an integer number (651105).

Almost surely, 2^12564320 is an apocalyptic number.

12564320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12564320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15626520).

12564320 is an abundant number, since it is smaller than the sum of its proper divisors (18688720).

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

12564320 is a wasteful number, since it uses less digits than its factorization.

12564320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167 (or 4159 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 12564320 is about 3544.6184561953. The cubic root of 12564320 is about 232.4768235270.

The spelling of 12564320 in words is "twelve million, five hundred sixty-four thousand, three hundred twenty".