12508479 has 32 divisors (see below), whose sum is σ = 20064000. Its totient is φ = 7674912.

The previous prime is 12508453. The next prime is 12508487. The reversal of 12508479 is 97480521.

It is not a de Polignac number, because 12508479 - 2⁷ = 12508351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12508409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18652 + ... + 19310.

It is an arithmetic number, because the mean of its divisors is an integer number (627000).

Almost surely, 2^12508479 is an apocalyptic number.

12508479 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12508479 is a deficient number, since it is larger than the sum of its proper divisors (7555521).

12508479 is a wasteful number, since it uses less digits than its factorization.

12508479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 12508479 is about 3536.7328143359. The cubic root of 12508479 is about 232.1319045292.

The spelling of 12508479 in words is "twelve million, five hundred eight thousand, four hundred seventy-nine".