13508990 has 32 divisors (see below), whose sum is σ = 26763264. Its totient is φ = 4868640.

The previous prime is 13508987. The next prime is 13509031. The reversal of 13508990 is 9980531.

It is a self number, because there is not a number n which added to its sum of digits gives 13508990.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13487 + ... + 14453.

It is an arithmetic number, because the mean of its divisors is an integer number (836352).

Almost surely, 2^13508990 is an apocalyptic number.

13508990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13508990 is a deficient number, since it is larger than the sum of its proper divisors (13254274).

13508990 is a wasteful number, since it uses less digits than its factorization.

13508990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 13508990 is about 3675.4577946155. The cubic root of 13508990 is about 238.1630006429.

The spelling of 13508990 in words is "thirteen million, five hundred eight thousand, nine hundred ninety".