13266978 has 32 divisors (see below), whose sum is σ = 28900800. Its totient is φ = 4044096.

The previous prime is 13266937. The next prime is 13267031. The reversal of 13266978 is 87966231.

It is a happy number.

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, 1300 + ... + 5312.

It is an arithmetic number, because the mean of its divisors is an integer number (903150).

Almost surely, 2^13266978 is an apocalyptic number.

13266978 is an abundant number, since it is smaller than the sum of its proper divisors (15633822).

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

13266978 is a wasteful number, since it uses less digits than its factorization.

13266978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066.

The product of its digits is 108864, while the sum is 42.

The square root of 13266978 is about 3642.3863057067. The cubic root of 13266978 is about 236.7322012082.

The spelling of 13266978 in words is "thirteen million, two hundred sixty-six thousand, nine hundred seventy-eight".