13440790 has 64 divisors (see below), whose sum is σ = 28512000. Its totient is φ = 4510080.

The previous prime is 13440781. The next prime is 13440821. The reversal of 13440790 is 9704431.

13440790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123256 + ... + 123364.

It is an arithmetic number, because the mean of its divisors is an integer number (445500).

Almost surely, 2^13440790 is an apocalyptic number.

13440790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13440790 is an abundant number, since it is smaller than the sum of its proper divisors (15071210).

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

13440790 is a wasteful number, since it uses less digits than its factorization.

13440790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 13440790 is about 3666.1682994647. The cubic root of 13440790 is about 237.7615364501.

The spelling of 13440790 in words is "thirteen million, four hundred forty thousand, seven hundred ninety".