12720504 has 16 divisors (see below), whose sum is σ = 31801320. Its totient is φ = 4240160.

The previous prime is 12720479. The next prime is 12720511. The reversal of 12720504 is 40502721.

It is a super-2 number, since 2×12720504² = 323622444028032, which contains 22 as substring.

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, 264987 + ... + 265034.

Almost surely, 2^12720504 is an apocalyptic number.

It is an amenable number.

12720504 is an abundant number, since it is smaller than the sum of its proper divisors (19080816).

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

12720504 is a wasteful number, since it uses less digits than its factorization.

12720504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530030 (or 530026 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 12720504 is about 3566.5815566169. The cubic root of 12720504 is about 233.4361469808.

The spelling of 12720504 in words is "twelve million, seven hundred twenty thousand, five hundred four".