864120432 has 80 divisors (see below), whose sum is σ = 2610586880. Its totient is φ = 241145856.

The previous prime is 864120377. The next prime is 864120451. The reversal of 864120432 is 234021468.

It is a self number, because there is not a number n which added to its sum of digits gives 864120432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15457 + ... + 44352.

It is an arithmetic number, because the mean of its divisors is an integer number (32632336).

Almost surely, 2^864120432 is an apocalyptic number.

It is an amenable number.

864120432 is an abundant number, since it is smaller than the sum of its proper divisors (1746466448).

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

864120432 is a wasteful number, since it uses less digits than its factorization.

864120432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59870 (or 59864 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 864120432 is about 29395.9254319370. The cubic root of 864120432 is about 952.4848823387.

The spelling of 864120432 in words is "eight hundred sixty-four million, one hundred twenty thousand, four hundred thirty-two".