764280832 has 144 divisors (see below), whose sum is σ = 1887429600. Its totient is φ = 308281344.

The previous prime is 764280821. The next prime is 764280857. The reversal of 764280832 is 238082467.

It is a super-2 number, since 2×764280832² = 1168250380325224448, which contains 22 as substring.

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, 44957688 + ... + 44957704.

It is an arithmetic number, because the mean of its divisors is an integer number (13107150).

Almost surely, 2^764280832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 764280832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943714800).

764280832 is an abundant number, since it is smaller than the sum of its proper divisors (1123148768).

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

764280832 is an frugal number, since it uses more digits than its factorization.

764280832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 26 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 764280832 is about 27645.6295280104. The cubic root of 764280832 is about 914.2907428295.

The spelling of 764280832 in words is "seven hundred sixty-four million, two hundred eighty thousand, eight hundred thirty-two".