76913820 has 48 divisors (see below), whose sum is σ = 239289120. Its totient is φ = 20510208.

The previous prime is 76913807. The next prime is 76913849. The reversal of 76913820 is 2831967.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 70677 + ... + 71756.

It is an arithmetic number, because the mean of its divisors is an integer number (4985190).

Almost surely, 2^76913820 is an apocalyptic number.

It is an amenable number.

76913820 is an abundant number, since it is smaller than the sum of its proper divisors (162375300).

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

76913820 is a wasteful number, since it uses less digits than its factorization.

76913820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142451 (or 142443 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 76913820 is about 8770.0524513825. The cubic root of 76913820 is about 425.2733097842.

It can be divided in two parts, 7691 and 3820, that added together give a palindrome (11511).

The spelling of 76913820 in words is "seventy-six million, nine hundred thirteen thousand, eight hundred twenty".