13138990 has 8 divisors (see below), whose sum is σ = 23650200. Its totient is φ = 5255592.

The previous prime is 13138949. The next prime is 13138997. The reversal of 13138990 is 9983131.

13138990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656940 + ... + 656959.

It is an arithmetic number, because the mean of its divisors is an integer number (2956275).

Almost surely, 2^13138990 is an apocalyptic number.

13138990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13138990 is a deficient number, since it is larger than the sum of its proper divisors (10511210).

13138990 is a wasteful number, since it uses less digits than its factorization.

13138990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313906.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 13138990 is about 3624.7744757433. The cubic root of 13138990 is about 235.9684794635.

The spelling of 13138990 in words is "thirteen million, one hundred thirty-eight thousand, nine hundred ninety".