12116978 has 16 divisors (see below), whose sum is σ = 18581400. Its totient is φ = 5924736.

The previous prime is 12116977. The next prime is 12116981. The reversal of 12116978 is 87961121.

It can be written as a sum of positive squares in 4 ways, for example, as 5650129 + 6466849 = 2377^2 + 2543^2 .

It is not an unprimeable number, because it can be changed into a prime (12116977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21476 + ... + 22032.

Almost surely, 2^12116978 is an apocalyptic number.

12116978 is a deficient number, since it is larger than the sum of its proper divisors (6464422).

12116978 is a wasteful number, since it uses less digits than its factorization.

12116978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781.

The product of its digits is 6048, while the sum is 35.

The square root of 12116978 is about 3480.9449866380. The cubic root of 12116978 is about 229.6843685661.

The spelling of 12116978 in words is "twelve million, one hundred sixteen thousand, nine hundred seventy-eight".