13203864 has 32 divisors (see below), whose sum is σ = 36678000. Its totient is φ = 4401216.

The previous prime is 13203859. The next prime is 13203871. The reversal of 13203864 is 46830231.

It is a happy number.

13203864 is digitally balanced in base 2, because in such base 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 (27).

It is a congruent number.

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, 30349 + ... + 30780.

Almost surely, 2^13203864 is an apocalyptic number.

It is an amenable number.

13203864 is an abundant number, since it is smaller than the sum of its proper divisors (23474136).

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

13203864 is a wasteful number, since it uses less digits than its factorization.

13203864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61144 (or 61134 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 13203864 is about 3633.7121515057. The cubic root of 13203864 is about 236.3562082299.

It can be divided in two parts, 1320 and 3864, that added together give a square (5184 = 72²).

The spelling of 13203864 in words is "thirteen million, two hundred three thousand, eight hundred sixty-four".