76991272 has 16 divisors (see below), whose sum is σ = 146726100. Its totient is φ = 37864320.

The previous prime is 76991263. The next prime is 76991279. The reversal of 76991272 is 27219967.

It can be written as a sum of positive squares in 2 ways, for example, as 75794436 + 1196836 = 8706^2 + 1094^2 .

It is a super-3 number, since 3×76991272³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (76991279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78397 + ... + 79372.

Almost surely, 2^76991272 is an apocalyptic number.

It is an amenable number.

76991272 is a deficient number, since it is larger than the sum of its proper divisors (69734828).

76991272 is a wasteful number, since it uses less digits than its factorization.

76991272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157836 (or 157832 counting only the distinct ones).

The product of its digits is 95256, while the sum is 43.

The square root of 76991272 is about 8774.4670493427. The cubic root of 76991272 is about 425.4160115697.

The spelling of 76991272 in words is "seventy-six million, nine hundred ninety-one thousand, two hundred seventy-two".