12938560 has 28 divisors (see below), whose sum is σ = 30810708. Its totient is φ = 5175296.

The previous prime is 12938521. The next prime is 12938573. The reversal of 12938560 is 6583921.

It can be written as a sum of positive squares in 2 ways, for example, as 3154176 + 9784384 = 1776^2 + 3128^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19897 + ... + 20536.

Almost surely, 2^12938560 is an apocalyptic number.

12938560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12938560 is an abundant number, since it is smaller than the sum of its proper divisors (17872148).

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

12938560 is an equidigital number, since it uses as much as digits as its factorization.

12938560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40450 (or 40440 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 12938560 is about 3597.0209896524. The cubic root of 12938560 is about 234.7624580229.

The spelling of 12938560 in words is "twelve million, nine hundred thirty-eight thousand, five hundred sixty".