13856736 has 24 divisors (see below), whose sum is σ = 36374184. Its totient is φ = 4618880.

The previous prime is 13856723. The next prime is 13856737. The reversal of 13856736 is 63765831.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 13856694 and 13856703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13856737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72075 + ... + 72266.

It is an arithmetic number, because the mean of its divisors is an integer number (1515591).

Almost surely, 2^13856736 is an apocalyptic number.

13856736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13856736 is an abundant number, since it is smaller than the sum of its proper divisors (22517448).

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

13856736 is a wasteful number, since it uses less digits than its factorization.

13856736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144354 (or 144346 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 13856736 is about 3722.4637002931. The cubic root of 13856736 is about 240.1892951025.

The spelling of 13856736 in words is "thirteen million, eight hundred fifty-six thousand, seven hundred thirty-six".