12944520 has 96 divisors (see below), whose sum is σ = 43144920. Its totient is φ = 3363840.

The previous prime is 12944509. The next prime is 12944537. The reversal of 12944520 is 2544921.

It can be written as a sum of positive squares in 4 ways, for example, as 9326916 + 3617604 = 3054^2 + 1902^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14322 + ... + 15198.

Almost surely, 2^12944520 is an apocalyptic number.

12944520 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 12944520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21572460).

12944520 is an abundant number, since it is smaller than the sum of its proper divisors (30200400).

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

12944520 is a wasteful number, since it uses less digits than its factorization.

12944520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 12944520 is about 3597.8493576024. The cubic root of 12944520 is about 234.7984993718.

The spelling of 12944520 in words is "twelve million, nine hundred forty-four thousand, five hundred twenty".