13920402 has 32 divisors (see below), whose sum is σ = 28957824. Its totient is φ = 4457600.

The previous prime is 13920391. The next prime is 13920419. The reversal of 13920402 is 20402931.

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, 17068 + ... + 17864.

It is an arithmetic number, because the mean of its divisors is an integer number (904932).

Almost surely, 2^13920402 is an apocalyptic number.

13920402 is an abundant number, since it is smaller than the sum of its proper divisors (15037422).

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

13920402 is a wasteful number, since it uses less digits than its factorization.

13920402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 13920402 is about 3731.0054945014. The cubic root of 13920402 is about 240.5565901441.

The spelling of 13920402 in words is "thirteen million, nine hundred twenty thousand, four hundred two".