43920864 has 72 divisors (see below), whose sum is σ = 134519112. Its totient is φ = 13512960.

The previous prime is 43920857. The next prime is 43920871. The reversal of 43920864 is 46802934.

It is a happy number.

43920864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (43920857) and next prime (43920871).

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2122 + ... + 9609.

It is an arithmetic number, because the mean of its divisors is an integer number (1868321).

Almost surely, 2^43920864 is an apocalyptic number.

It is an amenable number.

43920864 is an abundant number, since it is smaller than the sum of its proper divisors (90598248).

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

43920864 is a wasteful number, since it uses less digits than its factorization.

43920864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11760 (or 11749 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 43920864 is about 6627.2817957289. The cubic root of 43920864 is about 352.8230567867.

The spelling of 43920864 in words is "forty-three million, nine hundred twenty thousand, eight hundred sixty-four".