12500864 has 32 divisors (see below), whose sum is σ = 25132800. Its totient is φ = 6193152.

The previous prime is 12500849. The next prime is 12500867. The reversal of 12500864 is 46800521.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500867) 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, 15872 + ... + 16640.

It is an arithmetic number, because the mean of its divisors is an integer number (785400).

Almost surely, 2^12500864 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 12500864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12566400).

12500864 is an abundant number, since it is smaller than the sum of its proper divisors (12631936).

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

12500864 is an equidigital number, since it uses as much as digits as its factorization.

12500864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 12500864 is about 3535.6560918732. The cubic root of 12500864 is about 232.0847886678.

The spelling of 12500864 in words is "twelve million, five hundred thousand, eight hundred sixty-four".