13864536 has 48 divisors (see below), whose sum is σ = 42915600. Its totient is φ = 3961152.

The previous prime is 13864531. The next prime is 13864549. The reversal of 13864536 is 63546831.

13864536 is a `hidden beast` number, since 1 + 3 + 8 + 645 + 3 + 6 = 666.

13864536 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13864536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13864531) 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, 13251 + ... + 14258.

It is an arithmetic number, because the mean of its divisors is an integer number (894075).

Almost surely, 2^13864536 is an apocalyptic number.

It is an amenable number.

13864536 is an abundant number, since it is smaller than the sum of its proper divisors (29051064).

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

13864536 is a wasteful number, since it uses less digits than its factorization.

13864536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27528 (or 27521 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 13864536 is about 3723.5112461224. The cubic root of 13864536 is about 240.2343544172.

It can be divided in two parts, 138645 and 36, that multiplied together give a triangular number (4991220 = T₃₁₅₉).

The spelling of 13864536 in words is "thirteen million, eight hundred sixty-four thousand, five hundred thirty-six".