13438790 has 16 divisors (see below), whose sum is σ = 24753168. Its totient is φ = 5250336.

The previous prime is 13438781. The next prime is 13438811. The reversal of 13438790 is 9783431.

13438790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13438790.

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, 15197 + ... + 16056.

It is an arithmetic number, because the mean of its divisors is an integer number (1547073).

Almost surely, 2^13438790 is an apocalyptic number.

13438790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13438790 is a deficient number, since it is larger than the sum of its proper divisors (11314378).

13438790 is a wasteful number, since it uses less digits than its factorization.

13438790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31303.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 13438790 is about 3665.8955249707. The cubic root of 13438790 is about 237.7497428313.

The spelling of 13438790 in words is "thirteen million, four hundred thirty-eight thousand, seven hundred ninety".