80731172 has 6 divisors (see below), whose sum is σ = 141279558. Its totient is φ = 40365584.

The previous prime is 80731159. The next prime is 80731187. The reversal of 80731172 is 27113708.

It can be written as a sum of positive squares in only one way, i.e., 76983076 + 3748096 = 8774^2 + 1936^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10091393 + ... + 10091400.

It is an arithmetic number, because the mean of its divisors is an integer number (23546593).

Almost surely, 2^80731172 is an apocalyptic number.

It is an amenable number.

80731172 is a deficient number, since it is larger than the sum of its proper divisors (60548386).

80731172 is a wasteful number, since it uses less digits than its factorization.

80731172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20182797 (or 20182795 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 80731172 is about 8985.0526987881. The cubic root of 80731172 is about 432.1956775282.

The spelling of 80731172 in words is "eighty million, seven hundred thirty-one thousand, one hundred seventy-two".