12913878 has 16 divisors (see below), whose sum is σ = 25994160. Its totient is φ = 4276896.

The previous prime is 12913877. The next prime is 12913907. The reversal of 12913878 is 87831921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12913871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5913 + ... + 7796.

It is an arithmetic number, because the mean of its divisors is an integer number (1624635).

Almost surely, 2^12913878 is an apocalyptic number.

12913878 is an abundant number, since it is smaller than the sum of its proper divisors (13080282).

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

12913878 is a wasteful number, since it uses less digits than its factorization.

12913878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13871.

The product of its digits is 24192, while the sum is 39.

The square root of 12913878 is about 3593.5884572388. The cubic root of 12913878 is about 234.6130829397.

The spelling of 12913878 in words is "twelve million, nine hundred thirteen thousand, eight hundred seventy-eight".