13890790 has 16 divisors (see below), whose sum is σ = 25810560. Its totient is φ = 5376960.

The previous prime is 13890769. The next prime is 13890791. The reversal of 13890790 is 9709831.

13890790 = 219² + 220² + ... + 373².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13890791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22095 + ... + 22714.

It is an arithmetic number, because the mean of its divisors is an integer number (1613160).

Almost surely, 2^13890790 is an apocalyptic number.

13890790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13890790 is a deficient number, since it is larger than the sum of its proper divisors (11919770).

13890790 is a wasteful number, since it uses less digits than its factorization.

13890790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44847.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 13890790 is about 3727.0350145927. The cubic root of 13890790 is about 240.3858953909.

The spelling of 13890790 in words is "thirteen million, eight hundred ninety thousand, seven hundred ninety".