12928940 has 24 divisors (see below), whose sum is σ = 27814752. Its totient is φ = 5045120.

The previous prime is 12928933. The next prime is 12928969. The reversal of 12928940 is 4982921.

12928940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12928940.

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, 7064 + ... + 8703.

It is an arithmetic number, because the mean of its divisors is an integer number (1158948).

Almost surely, 2^12928940 is an apocalyptic number.

12928940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12928940 is an abundant number, since it is smaller than the sum of its proper divisors (14885812).

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

12928940 is a wasteful number, since it uses less digits than its factorization.

12928940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15817 (or 15815 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 12928940 is about 3595.6835233374. The cubic root of 12928940 is about 234.7042605419.

The spelling of 12928940 in words is "twelve million, nine hundred twenty-eight thousand, nine hundred forty".