13151998 has 24 divisors (see below), whose sum is σ = 21341376. Its totient is φ = 6072000.

The previous prime is 13151989. The next prime is 13152011. The reversal of 13151998 is 89915131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32598 + ... + 32998.

It is an arithmetic number, because the mean of its divisors is an integer number (889224).

Almost surely, 2^13151998 is an apocalyptic number.

13151998 is a deficient number, since it is larger than the sum of its proper divisors (8189378).

13151998 is a wasteful number, since it uses less digits than its factorization.

13151998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 457 counting only the distinct ones).

The product of its digits is 9720, while the sum is 37.

The square root of 13151998 is about 3626.5683503830. The cubic root of 13151998 is about 236.0463257713.

The spelling of 13151998 in words is "thirteen million, one hundred fifty-one thousand, nine hundred ninety-eight".