727680172 has 12 divisors (see below), whose sum is σ = 1348348680. Its totient is φ = 342437696.

The previous prime is 727680137. The next prime is 727680211. The reversal of 727680172 is 271086727.

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, 5350522 + ... + 5350657.

It is an arithmetic number, because the mean of its divisors is an integer number (112362390).

Almost surely, 2^727680172 is an apocalyptic number.

It is an amenable number.

727680172 is a deficient number, since it is larger than the sum of its proper divisors (620668508).

727680172 is a wasteful number, since it uses less digits than its factorization.

727680172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10701200 (or 10701198 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 727680172 is about 26975.5476682124. The cubic root of 727680172 is about 899.4565327974.

The spelling of 727680172 in words is "seven hundred twenty-seven million, six hundred eighty thousand, one hundred seventy-two".