12978592 has 24 divisors (see below), whose sum is σ = 27875232. Its totient is φ = 5899200.

The previous prime is 12978583. The next prime is 12978593. The reversal of 12978592 is 29587921.

It is not an unprimeable number, because it can be changed into a prime (12978593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18084 + ... + 18787.

It is an arithmetic number, because the mean of its divisors is an integer number (1161468).

Almost surely, 2^12978592 is an apocalyptic number.

It is an amenable number.

12978592 is an abundant number, since it is smaller than the sum of its proper divisors (14896640).

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

12978592 is a wasteful number, since it uses less digits than its factorization.

12978592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36892 (or 36884 counting only the distinct ones).

The product of its digits is 90720, while the sum is 43.

The square root of 12978592 is about 3602.5812967926. The cubic root of 12978592 is about 235.0043276704.

It can be divided in two parts, 1297 and 8592, that added together give a palindrome (9889).

The spelling of 12978592 in words is "twelve million, nine hundred seventy-eight thousand, five hundred ninety-two".