764427540 has 48 divisors (see below), whose sum is σ = 2233461888. Its totient is φ = 194984064.

The previous prime is 764427529. The next prime is 764427557. The reversal of 764427540 is 45724467.

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 15 ways as a sum of consecutive naturals, for example, 275587 + ... + 278346.

It is an arithmetic number, because the mean of its divisors is an integer number (46530456).

Almost surely, 2^764427540 is an apocalyptic number.

It is an amenable number.

764427540 is an abundant number, since it is smaller than the sum of its proper divisors (1469034348).

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

764427540 is a wasteful number, since it uses less digits than its factorization.

764427540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553968 (or 553966 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 39.

The square root of 764427540 is about 27648.2827676512. The cubic root of 764427540 is about 914.3492401684.

The spelling of 764427540 in words is "seven hundred sixty-four million, four hundred twenty-seven thousand, five hundred forty".