765258240 has 80 divisors (see below), whose sum is σ = 2446459488. Its totient is φ = 204066816.

The previous prime is 765258239. The next prime is 765258271. The reversal of 765258240 is 42852567.

It is a tau number, because it is divible by the number of its divisors (80).

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 7 ways as a sum of consecutive naturals, for example, 42142 + ... + 57501.

Almost surely, 2^765258240 is an apocalyptic number.

It is an amenable number.

765258240 is an abundant number, since it is smaller than the sum of its proper divisors (1681201248).

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

765258240 is an equidigital number, since it uses as much as digits as its factorization.

765258240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99669 (or 99653 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 765258240 is about 27663.3013214258. The cubic root of 765258240 is about 914.6803266817.

The spelling of 765258240 in words is "seven hundred sixty-five million, two hundred fifty-eight thousand, two hundred forty".