13047864 has 16 divisors (see below), whose sum is σ = 32619720. Its totient is φ = 4349280.

The previous prime is 13047863. The next prime is 13047871. The reversal of 13047864 is 46874031.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13047863) 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, 271807 + ... + 271854.

Almost surely, 2^13047864 is an apocalyptic number.

It is an amenable number.

13047864 is an abundant number, since it is smaller than the sum of its proper divisors (19571856).

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

13047864 is a wasteful number, since it uses less digits than its factorization.

13047864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543670 (or 543666 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 13047864 is about 3612.1827196309. The cubic root of 13047864 is about 235.4216904176.

The spelling of 13047864 in words is "thirteen million, forty-seven thousand, eight hundred sixty-four".