12938870 has 64 divisors (see below), whose sum is σ = 28740096. Its totient is φ = 4093440.

The previous prime is 12938869. The next prime is 12938879. The reversal of 12938870 is 7883921.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12938879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98705 + ... + 98835.

It is an arithmetic number, because the mean of its divisors is an integer number (449064).

Almost surely, 2^12938870 is an apocalyptic number.

12938870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12938870 is an abundant number, since it is smaller than the sum of its proper divisors (15801226).

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

12938870 is a wasteful number, since it uses less digits than its factorization.

12938870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 12938870 is about 3597.0640806080. The cubic root of 12938870 is about 234.7643329296.

The spelling of 12938870 in words is "twelve million, nine hundred thirty-eight thousand, eight hundred seventy".