764307828 has 36 divisors (see below), whose sum is σ = 2045649060. Its totient is φ = 239782656.

The previous prime is 764307799. The next prime is 764307839. The reversal of 764307828 is 828703467.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 270668304 + 493639524 = 16452^2 + 22218^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 623823 + ... + 625046.

It is an arithmetic number, because the mean of its divisors is an integer number (56823585).

Almost surely, 2^764307828 is an apocalyptic number.

It is an amenable number.

764307828 is an abundant number, since it is smaller than the sum of its proper divisors (1281341232).

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

764307828 is a wasteful number, since it uses less digits than its factorization.

764307828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248896 (or 1248891 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 764307828 is about 27646.1177744724. The cubic root of 764307828 is about 914.3015075908.

The spelling of 764307828 in words is "seven hundred sixty-four million, three hundred seven thousand, eight hundred twenty-eight".