13215087 has 12 divisors (see below), whose sum is σ = 19918704. Its totient is φ = 8426880.

The previous prime is 13215053. The next prime is 13215091. The reversal of 13215087 is 78051231.

It is not a de Polignac number, because 13215087 - 2¹⁸ = 12952943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13215087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31714 + ... + 32127.

It is an arithmetic number, because the mean of its divisors is an integer number (1659892).

Almost surely, 2^13215087 is an apocalyptic number.

13215087 is a deficient number, since it is larger than the sum of its proper divisors (6703617).

13215087 is a wasteful number, since it uses less digits than its factorization.

13215087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63870 (or 63867 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 13215087 is about 3635.2561120229. The cubic root of 13215087 is about 236.4231551610.

The spelling of 13215087 in words is "thirteen million, two hundred fifteen thousand, eighty-seven".