728579680 has 24 divisors (see below), whose sum is σ = 1721269872. Its totient is φ = 291431808.

The previous prime is 728579651. The next prime is 728579689. The reversal of 728579680 is 86975827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728579689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2276652 + ... + 2276971.

It is an arithmetic number, because the mean of its divisors is an integer number (71719578).

Almost surely, 2^728579680 is an apocalyptic number.

It is an amenable number.

728579680 is an abundant number, since it is smaller than the sum of its proper divisors (992690192).

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

728579680 is a wasteful number, since it uses less digits than its factorization.

728579680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553638 (or 4553630 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 52.

The square root of 728579680 is about 26992.2151740090. The cubic root of 728579680 is about 899.8269955526.

The spelling of 728579680 in words is "seven hundred twenty-eight million, five hundred seventy-nine thousand, six hundred eighty".