76831140 has 24 divisors (see below), whose sum is σ = 215127360. Its totient is φ = 20488288.

The previous prime is 76831127. The next prime is 76831141. The reversal of 76831140 is 4113867.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 76831098 and 76831107.

It is not an unprimeable number, because it can be changed into a prime (76831141) 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 7 ways as a sum of consecutive naturals, for example, 640200 + ... + 640319.

It is an arithmetic number, because the mean of its divisors is an integer number (8963640).

Almost surely, 2^76831140 is an apocalyptic number.

It is an amenable number.

76831140 is an abundant number, since it is smaller than the sum of its proper divisors (138296220).

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

76831140 is a wasteful number, since it uses less digits than its factorization.

76831140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280531 (or 1280529 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 76831140 is about 8765.3374150685. The cubic root of 76831140 is about 425.1208698890.

The spelling of 76831140 in words is "seventy-six million, eight hundred thirty-one thousand, one hundred forty".