12658920 has 32 divisors (see below), whose sum is σ = 37977120. Its totient is φ = 3375680.

The previous prime is 12658879. The next prime is 12658949. The reversal of 12658920 is 2985621.

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, 52626 + ... + 52865.

It is an arithmetic number, because the mean of its divisors is an integer number (1186785).

Almost surely, 2^12658920 is an apocalyptic number.

12658920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12658920 is an abundant number, since it is smaller than the sum of its proper divisors (25318200).

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

12658920 is a wasteful number, since it uses less digits than its factorization.

12658920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105505 (or 105501 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 12658920 is about 3557.9376048492. The cubic root of 12658920 is about 233.0588245687.

The spelling of 12658920 in words is "twelve million, six hundred fifty-eight thousand, nine hundred twenty".