13380978 has 32 divisors (see below), whose sum is σ = 30340800. Its totient is φ = 3900096.

The previous prime is 13380967. The next prime is 13381001. The reversal of 13380978 is 87908331.

13380978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon 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, 3033 + ... + 5996.

It is an arithmetic number, because the mean of its divisors is an integer number (948150).

Almost surely, 2^13380978 is an apocalyptic number.

13380978 is an abundant number, since it is smaller than the sum of its proper divisors (16959822).

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

13380978 is a wasteful number, since it uses less digits than its factorization.

13380978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9066.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 13380978 is about 3658.0019136135. The cubic root of 13380978 is about 237.4083295338.

The spelling of 13380978 in words is "thirteen million, three hundred eighty thousand, nine hundred seventy-eight".