80372728 has 8 divisors (see below), whose sum is σ = 150698880. Its totient is φ = 40186360.

The previous prime is 80372713. The next prime is 80372759. The reversal of 80372728 is 82727308.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5023288 + ... + 5023303.

It is an arithmetic number, because the mean of its divisors is an integer number (18837360).

Almost surely, 2^80372728 is an apocalyptic number.

It is an amenable number.

80372728 is a deficient number, since it is larger than the sum of its proper divisors (70326152).

80372728 is a wasteful number, since it uses less digits than its factorization.

80372728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10046597 (or 10046593 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 80372728 is about 8965.0838255981. The cubic root of 80372728 is about 431.5550832041. Note that the first 3 decimals are identical.

The spelling of 80372728 in words is "eighty million, three hundred seventy-two thousand, seven hundred twenty-eight".