76221472 has 48 divisors (see below), whose sum is σ = 160030080. Its totient is φ = 35611648.

The previous prime is 76221461. The next prime is 76221487. The reversal of 76221472 is 27412267.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90429 + ... + 91267.

It is an arithmetic number, because the mean of its divisors is an integer number (3333960).

Almost surely, 2^76221472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76221472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80015040).

76221472 is an abundant number, since it is smaller than the sum of its proper divisors (83808608).

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

76221472 is a wasteful number, since it uses less digits than its factorization.

76221472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033 (or 1025 counting only the distinct ones).

The product of its digits is 9408, while the sum is 31.

The square root of 76221472 is about 8730.4909369405. The cubic root of 76221472 is about 423.9934139240.

The spelling of 76221472 in words is "seventy-six million, two hundred twenty-one thousand, four hundred seventy-two".