76491252 has 18 divisors (see below), whose sum is σ = 193352978. Its totient is φ = 25497072.

The previous prime is 76491251. The next prime is 76491269. The reversal of 76491252 is 25219467.

76491252 is a `hidden beast` number, since 7 + 649 + 1 + 2 + 5 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 62157456 + 14333796 = 7884^2 + 3786^2 .

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: 2124757 = 76491252 / (7 + 6 + 4 + 9 + 1 + 2 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76491251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1062343 + ... + 1062414.

Almost surely, 2^76491252 is an apocalyptic number.

It is an amenable number.

76491252 is an abundant number, since it is smaller than the sum of its proper divisors (116861726).

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

76491252 is a wasteful number, since it uses less digits than its factorization.

76491252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124767 (or 2124762 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 76491252 is about 8745.9277380962. The cubic root of 76491252 is about 424.4930555287.

The spelling of 76491252 in words is "seventy-six million, four hundred ninety-one thousand, two hundred fifty-two".