12465978 has 32 divisors (see below), whose sum is σ = 28619136. Its totient is φ = 3546048.

The previous prime is 12465907. The next prime is 12465983. The reversal of 12465978 is 87956421.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11800 + ... + 12812.

It is an arithmetic number, because the mean of its divisors is an integer number (894348).

Almost surely, 2^12465978 is an apocalyptic number.

12465978 is an abundant number, since it is smaller than the sum of its proper divisors (16153158).

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

12465978 is a wasteful number, since it uses less digits than its factorization.

12465978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318.

The product of its digits is 120960, while the sum is 42.

The square root of 12465978 is about 3530.7191901934. The cubic root of 12465978 is about 231.8686955176.

The spelling of 12465978 in words is "twelve million, four hundred sixty-five thousand, nine hundred seventy-eight".