13237994 has 32 divisors (see below), whose sum is σ = 25145856. Its totient is φ = 5076720.

The previous prime is 13237981. The next prime is 13237997. The reversal of 13237994 is 49973231.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13237997) 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, 9677 + ... + 10959.

It is an arithmetic number, because the mean of its divisors is an integer number (785808).

Almost surely, 2^13237994 is an apocalyptic number.

13237994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13237994 is a deficient number, since it is larger than the sum of its proper divisors (11907862).

13237994 is a wasteful number, since it uses less digits than its factorization.

13237994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370.

The product of its digits is 40824, while the sum is 38.

The square root of 13237994 is about 3638.4054199608. The cubic root of 13237994 is about 236.5596814160.

The spelling of 13237994 in words is "thirteen million, two hundred thirty-seven thousand, nine hundred ninety-four".