764547728 has 20 divisors (see below), whose sum is σ = 1692927360. Its totient is φ = 327663264.

The previous prime is 764547727. The next prime is 764547781. The reversal of 764547728 is 827745467.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (764547727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3413048 + ... + 3413271.

It is an arithmetic number, because the mean of its divisors is an integer number (84646368).

Almost surely, 2^764547728 is an apocalyptic number.

It is an amenable number.

764547728 is an abundant number, since it is smaller than the sum of its proper divisors (928379632).

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

764547728 is a wasteful number, since it uses less digits than its factorization.

764547728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6826334 (or 6826328 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 50.

The square root of 764547728 is about 27650.4561987682. The cubic root of 764547728 is about 914.3971575279.

The spelling of 764547728 in words is "seven hundred sixty-four million, five hundred forty-seven thousand, seven hundred twenty-eight".