12937881 has 16 divisors (see below), whose sum is σ = 19427328. Its totient is φ = 7587600.

The previous prime is 12937877. The next prime is 12937913. The reversal of 12937881 is 18873921.

12937881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12937881 - 2² = 12937877 is a prime.

It is a super-2 number, since 2×12937881² = 334777529540322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12937861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5301 + ... + 7346.

It is an arithmetic number, because the mean of its divisors is an integer number (1214208).

Almost surely, 2^12937881 is an apocalyptic number.

12937881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12937881 is a deficient number, since it is larger than the sum of its proper divisors (6489447).

12937881 is a wasteful number, since it uses less digits than its factorization.

12937881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12692.

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

The square root of 12937881 is about 3596.9266047558. The cubic root of 12937881 is about 234.7583512676.

The spelling of 12937881 in words is "twelve million, nine hundred thirty-seven thousand, eight hundred eighty-one".