13815790 has 16 divisors (see below), whose sum is σ = 25116480. Its totient is φ = 5471200.

The previous prime is 13815779. The next prime is 13815821. The reversal of 13815790 is 9751831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5830 + ... + 7849.

It is an arithmetic number, because the mean of its divisors is an integer number (1569780).

Almost surely, 2^13815790 is an apocalyptic number.

13815790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13815790 is a deficient number, since it is larger than the sum of its proper divisors (11300690).

13815790 is a wasteful number, since it uses less digits than its factorization.

13815790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13787.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 13815790 is about 3716.9597791744. The cubic root of 13815790 is about 239.9524790172.

The spelling of 13815790 in words is "thirteen million, eight hundred fifteen thousand, seven hundred ninety".