12937520 has 40 divisors (see below), whose sum is σ = 30600720. Its totient is φ = 5085440.

The previous prime is 12937517. The next prime is 12937541. The reversal of 12937520 is 2573921.

It is a tau number, because it is divible by the number of its divisors (40).

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, 3350 + ... + 6090.

It is an arithmetic number, because the mean of its divisors is an integer number (765018).

Almost surely, 2^12937520 is an apocalyptic number.

12937520 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 12937520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15300360).

12937520 is an abundant number, since it is smaller than the sum of its proper divisors (17663200).

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

12937520 is a wasteful number, since it uses less digits than its factorization.

12937520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813 (or 2807 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 12937520 is about 3596.8764226757. The cubic root of 12937520 is about 234.7561677943.

The spelling of 12937520 in words is "twelve million, nine hundred thirty-seven thousand, five hundred twenty".