13537990 has 16 divisors (see below), whose sum is σ = 24412752. Its totient is φ = 5405344.

The previous prime is 13537987. The next prime is 13538009. The reversal of 13537990 is 9973531.

13537990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7452 + ... + 9088.

It is an arithmetic number, because the mean of its divisors is an integer number (1525797).

Almost surely, 2^13537990 is an apocalyptic number.

13537990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13537990 is a deficient number, since it is larger than the sum of its proper divisors (10874762).

13537990 is a wasteful number, since it uses less digits than its factorization.

13537990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 13537990 is about 3679.4007664292. The cubic root of 13537990 is about 238.3333018186. Note that the first 4 decimals are identical.

The spelling of 13537990 in words is "thirteen million, five hundred thirty-seven thousand, nine hundred ninety".