13801236 has 12 divisors (see below), whose sum is σ = 32202912. Its totient is φ = 4600408.

The previous prime is 13801213. The next prime is 13801261. The reversal of 13801236 is 63210831.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575040 + ... + 575063.

It is an arithmetic number, because the mean of its divisors is an integer number (2683576).

Almost surely, 2^13801236 is an apocalyptic number.

It is an amenable number.

13801236 is an abundant number, since it is smaller than the sum of its proper divisors (18401676).

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

13801236 is a wasteful number, since it uses less digits than its factorization.

13801236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150110 (or 1150108 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 13801236 is about 3715.0014804842. The cubic root of 13801236 is about 239.8681915127.

The spelling of 13801236 in words is "thirteen million, eight hundred one thousand, two hundred thirty-six".