12657020 has 12 divisors (see below), whose sum is σ = 26579784. Its totient is φ = 5062800.

The previous prime is 12657013. The next prime is 12657041. The reversal of 12657020 is 2075621.

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, 316406 + ... + 316445.

It is an arithmetic number, because the mean of its divisors is an integer number (2214982).

Almost surely, 2^12657020 is an apocalyptic number.

12657020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12657020 is an abundant number, since it is smaller than the sum of its proper divisors (13922764).

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

12657020 is a wasteful number, since it uses less digits than its factorization.

12657020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632860 (or 632858 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 12657020 is about 3557.6705862123. The cubic root of 12657020 is about 233.0471639130.

The spelling of 12657020 in words is "twelve million, six hundred fifty-seven thousand, twenty".