76831000440 has 128 divisors (see below), whose sum is σ = 246381004800. Its totient is φ = 19119457280.

The previous prime is 76831000339. The next prime is 76831000459. The reversal of 76831000440 is 4400013867.

It is a super-2 number, since 2×76831000440² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226320 + ... + 452639.

It is an arithmetic number, because the mean of its divisors is an integer number (1924851600).

Almost surely, 2^76831000440 is an apocalyptic number.

76831000440 is the 226320-th pentagonal number.

It is an amenable number.

76831000440 is an abundant number, since it is smaller than the sum of its proper divisors (169550004360).

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

76831000440 is a wasteful number, since it uses less digits than its factorization.

76831000440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679037 (or 679033 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The spelling of 76831000440 in words is "seventy-six billion, eight hundred thirty-one million, four hundred forty", and thus it is an aban number.