80730528 has 24 divisors (see below), whose sum is σ = 211917888. Its totient is φ = 26910144.

The previous prime is 80730509. The next prime is 80730553. The reversal of 80730528 is 82503708.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420376 + ... + 420567.

It is an arithmetic number, because the mean of its divisors is an integer number (8829912).

Almost surely, 2^80730528 is an apocalyptic number.

It is an amenable number.

80730528 is an abundant number, since it is smaller than the sum of its proper divisors (131187360).

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

80730528 is a wasteful number, since it uses less digits than its factorization.

80730528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840956 (or 840948 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 80730528 is about 8985.0168614199. The cubic root of 80730528 is about 432.1945283035.

The spelling of 80730528 in words is "eighty million, seven hundred thirty thousand, five hundred twenty-eight".