13089915 has 48 divisors (see below), whose sum is σ = 24463296. Its totient is φ = 6451200.

The previous prime is 13089911. The next prime is 13089941. The reversal of 13089915 is 51998031.

It is a happy number.

It is not a de Polignac number, because 13089915 - 2² = 13089911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13089915.

It is not an unprimeable number, because it can be changed into a prime (13089911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54195 + ... + 54435.

It is an arithmetic number, because the mean of its divisors is an integer number (509652).

Almost surely, 2^13089915 is an apocalyptic number.

13089915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13089915 is a deficient number, since it is larger than the sum of its proper divisors (11373381).

13089915 is a wasteful number, since it uses less digits than its factorization.

13089915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 13089915 is about 3617.9987562187. The cubic root of 13089915 is about 235.6743269534.

The spelling of 13089915 in words is "thirteen million, eighty-nine thousand, nine hundred fifteen".