13261836 has 96 divisors (see below), whose sum is σ = 38610432. Its totient is φ = 3456000.

The previous prime is 13261817. The next prime is 13261841. The reversal of 13261836 is 63816231.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52711 + ... + 52961.

It is an arithmetic number, because the mean of its divisors is an integer number (402192).

Almost surely, 2^13261836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13261836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19305216).

13261836 is an abundant number, since it is smaller than the sum of its proper divisors (25348596).

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

13261836 is a wasteful number, since it uses less digits than its factorization.

13261836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 317 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 13261836 is about 3641.6803813624. The cubic root of 13261836 is about 236.7016131251.

The spelling of 13261836 in words is "thirteen million, two hundred sixty-one thousand, eight hundred thirty-six".