80997228 has 72 divisors (see below), whose sum is σ = 232122800. Its totient is φ = 23607936.

The previous prime is 80997211. The next prime is 80997229. The reversal of 80997228 is 82279908.

It is not an unprimeable number, because it can be changed into a prime (80997229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4338 + ... + 13446.

Almost surely, 2^80997228 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 80997228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116061400).

80997228 is an abundant number, since it is smaller than the sum of its proper divisors (151125572).

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

80997228 is a wasteful number, since it uses less digits than its factorization.

80997228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9151 (or 9146 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 80997228 is about 8999.8459986824. The cubic root of 80997228 is about 432.6699353374.

It can be divided in two parts, 809972 and 28, that added together give a 4-th power (810000 = 30⁴).

The spelling of 80997228 in words is "eighty million, nine hundred ninety-seven thousand, two hundred twenty-eight".