76831236 has 18 divisors (see below), whose sum is σ = 194212382. Its totient is φ = 25610400.

The previous prime is 76831217. The next prime is 76831267. The reversal of 76831236 is 63213867.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 76737600 + 93636 = 8760^2 + 306^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2134201 = 76831236 / (7 + 6 + 8 + 3 + 1 + 2 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 76831236.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1067065 + ... + 1067136.

Almost surely, 2^76831236 is an apocalyptic number.

It is an amenable number.

76831236 is an abundant number, since it is smaller than the sum of its proper divisors (117381146).

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

76831236 is a wasteful number, since it uses less digits than its factorization.

76831236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134211 (or 2134206 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 76831236 is about 8765.3428911823. The cubic root of 76831236 is about 425.1210469508.

The spelling of 76831236 in words is "seventy-six million, eight hundred thirty-one thousand, two hundred thirty-six".