76721412 has 24 divisors (see below), whose sum is σ = 179804800. Its totient is φ = 25461216.

The previous prime is 76721401. The next prime is 76721419. The reversal of 76721412 is 21412767.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 76721412.

It is not an unprimeable number, because it can be changed into a prime (76721419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11212 + ... + 16707.

Almost surely, 2^76721412 is an apocalyptic number.

It is an amenable number.

76721412 is an abundant number, since it is smaller than the sum of its proper divisors (103083388).

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

76721412 is a wasteful number, since it uses less digits than its factorization.

76721412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28155 (or 28153 counting only the distinct ones).

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

The square root of 76721412 is about 8759.0759786635. The cubic root of 76721412 is about 424.9183917124.

The spelling of 76721412 in words is "seventy-six million, seven hundred twenty-one thousand, four hundred twelve".