764782140 has 48 divisors (see below), whose sum is σ = 2150779680. Its totient is φ = 203047680.

The previous prime is 764782127. The next prime is 764782159. The reversal of 764782140 is 41287467.

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, 14091 + ... + 41570.

It is an arithmetic number, because the mean of its divisors is an integer number (44807910).

Almost surely, 2^764782140 is an apocalyptic number.

It is an amenable number.

764782140 is an abundant number, since it is smaller than the sum of its proper divisors (1385997540).

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

764782140 is a wasteful number, since it uses less digits than its factorization.

764782140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55902 (or 55900 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 764782140 is about 27654.6947189804. The cubic root of 764782140 is about 914.4906000325.

The spelling of 764782140 in words is "seven hundred sixty-four million, seven hundred eighty-two thousand, one hundred forty".