13087236 has 24 divisors (see below), whose sum is σ = 31590720. Its totient is φ = 4211872.

The previous prime is 13087213. The next prime is 13087259. The reversal of 13087236 is 63278031.

It is an interprime number because it is at equal distance from previous prime (13087213) and next prime (13087259).

It is a super-2 number, since 2×13087236² = 342551492239392, which contains 22 as substring.

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, 18456 + ... + 19151.

It is an arithmetic number, because the mean of its divisors is an integer number (1316280).

Almost surely, 2^13087236 is an apocalyptic number.

It is an amenable number.

13087236 is an abundant number, since it is smaller than the sum of its proper divisors (18503484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13087236 is a wasteful number, since it uses less digits than its factorization.

13087236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37643 (or 37641 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 13087236 is about 3617.6285049739. The cubic root of 13087236 is about 235.6582480458.

The spelling of 13087236 in words is "thirteen million, eighty-seven thousand, two hundred thirty-six".