80221872 has 20 divisors (see below), whose sum is σ = 207239960. Its totient is φ = 26740608.

The previous prime is 80221853. The next prime is 80221873. The reversal of 80221872 is 27812208.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (80221873) 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, 835597 + ... + 835692.

It is an arithmetic number, because the mean of its divisors is an integer number (10361998).

Almost surely, 2^80221872 is an apocalyptic number.

It is an amenable number.

80221872 is an abundant number, since it is smaller than the sum of its proper divisors (127018088).

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

80221872 is a wasteful number, since it uses less digits than its factorization.

80221872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671300 (or 1671294 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 80221872 is about 8956.6663441260. Note that the first 3 decimals coincide. The cubic root of 80221872 is about 431.2849109314.

The spelling of 80221872 in words is "eighty million, two hundred twenty-one thousand, eight hundred seventy-two".