12538580 has 12 divisors (see below), whose sum is σ = 26331060. Its totient is φ = 5015424.

The previous prime is 12538549. The next prime is 12538607. The reversal of 12538580 is 8583521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2829124 + 9709456 = 1682^2 + 3116^2 .

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, 313445 + ... + 313484.

It is an arithmetic number, because the mean of its divisors is an integer number (2194255).

Almost surely, 2^12538580 is an apocalyptic number.

12538580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12538580 is an abundant number, since it is smaller than the sum of its proper divisors (13792480).

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

12538580 is a wasteful number, since it uses less digits than its factorization.

12538580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626938 (or 626936 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 12538580 is about 3540.9857384632. The cubic root of 12538580 is about 232.3179597909.

The spelling of 12538580 in words is "twelve million, five hundred thirty-eight thousand, five hundred eighty".