80974728 has 160 divisors (see below), whose sum is σ = 243936000. Its totient is φ = 25038720.

The previous prime is 80974721. The next prime is 80974741. The reversal of 80974728 is 82747908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80974721) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 582483 + ... + 582621.

It is an arithmetic number, because the mean of its divisors is an integer number (1524600).

Almost surely, 2^80974728 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 80974728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121968000).

80974728 is an abundant number, since it is smaller than the sum of its proper divisors (162961272).

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

80974728 is a wasteful number, since it uses less digits than its factorization.

80974728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 80974728 is about 8998.5958904709. The cubic root of 80974728 is about 432.6298682250.

The spelling of 80974728 in words is "eighty million, nine hundred seventy-four thousand, seven hundred twenty-eight".