76421172 has 12 divisors (see below), whose sum is σ = 178316096. Its totient is φ = 25473720.

The previous prime is 76421167. The next prime is 76421179. The reversal of 76421172 is 27112467.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76421179) 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, 3184204 + ... + 3184227.

Almost surely, 2^76421172 is an apocalyptic number.

It is an amenable number.

76421172 is an abundant number, since it is smaller than the sum of its proper divisors (101894924).

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

76421172 is a wasteful number, since it uses less digits than its factorization.

76421172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6368438 (or 6368436 counting only the distinct ones).

The product of its digits is 4704, while the sum is 30.

The square root of 76421172 is about 8741.9203839889. The cubic root of 76421172 is about 424.3633781159.

The spelling of 76421172 in words is "seventy-six million, four hundred twenty-one thousand, one hundred seventy-two".