13137990 has 32 divisors (see below), whose sum is σ = 31781376. Its totient is φ = 3475680.

The previous prime is 13137989. The next prime is 13138001. The reversal of 13137990 is 9973131.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2259 + ... + 5601.

It is an arithmetic number, because the mean of its divisors is an integer number (993168).

Almost surely, 2^13137990 is an apocalyptic number.

13137990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13137990 is an abundant number, since it is smaller than the sum of its proper divisors (18643386).

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

13137990 is a wasteful number, since it uses less digits than its factorization.

13137990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484.

The product of its (nonzero) digits is 5103, while the sum is 33.

The square root of 13137990 is about 3624.6365335024. The cubic root of 13137990 is about 235.9624928424.

The spelling of 13137990 in words is "thirteen million, one hundred thirty-seven thousand, nine hundred ninety".