13621090 has 32 divisors (see below), whose sum is σ = 28929024. Its totient is φ = 4518720.

The previous prime is 13621087. The next prime is 13621099. The reversal of 13621090 is 9012631.

It is not an unprimeable number, because it can be changed into a prime (13621099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 969 + ... + 5308.

It is an arithmetic number, because the mean of its divisors is an integer number (904032).

Almost surely, 2^13621090 is an apocalyptic number.

13621090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13621090 is an abundant number, since it is smaller than the sum of its proper divisors (15307934).

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

13621090 is a wasteful number, since it uses less digits than its factorization.

13621090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6322.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 13621090 is about 3690.6760898242. The cubic root of 13621090 is about 238.8199597617.

The spelling of 13621090 in words is "thirteen million, six hundred twenty-one thousand, ninety".