12717720 has 48 divisors (see below), whose sum is σ = 41333760. Its totient is φ = 3391296.

The previous prime is 12717709. The next prime is 12717763. The reversal of 12717720 is 2771721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17304 + ... + 18023.

It is an arithmetic number, because the mean of its divisors is an integer number (861120).

Almost surely, 2^12717720 is an apocalyptic number.

12717720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12717720 is an abundant number, since it is smaller than the sum of its proper divisors (28616040).

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

12717720 is a wasteful number, since it uses less digits than its factorization.

12717720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35344 (or 35337 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 27.

The square root of 12717720 is about 3566.1912455728. The cubic root of 12717720 is about 233.4191158514.

The spelling of 12717720 in words is "twelve million, seven hundred seventeen thousand, seven hundred twenty".