12791720 has 32 divisors (see below), whose sum is σ = 28944000. Its totient is φ = 5087808.

The previous prime is 12791687. The next prime is 12791773. The reversal of 12791720 is 2719721.

12791720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7157 + ... + 8763.

It is an arithmetic number, because the mean of its divisors is an integer number (904500).

Almost surely, 2^12791720 is an apocalyptic number.

12791720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12791720 is an abundant number, since it is smaller than the sum of its proper divisors (16152280).

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

12791720 is a wasteful number, since it uses less digits than its factorization.

12791720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 12791720 is about 3576.5514116255. The cubic root of 12791720 is about 233.8709688712.

The spelling of 12791720 in words is "twelve million, seven hundred ninety-one thousand, seven hundred twenty".