728573901 has 16 divisors (see below), whose sum is σ = 1060300800. Its totient is φ = 441327920.

The previous prime is 728573869. The next prime is 728573929. The reversal of 728573901 is 109375827.

It is not a de Polignac number, because 728573901 - 2⁵ = 728573869 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728573971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74566 + ... + 83768.

It is an arithmetic number, because the mean of its divisors is an integer number (66268800).

Almost surely, 2^728573901 is an apocalyptic number.

It is an amenable number.

728573901 is a deficient number, since it is larger than the sum of its proper divisors (331726899).

728573901 is a wasteful number, since it uses less digits than its factorization.

728573901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11616.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 728573901 is about 26992.1081244130. The cubic root of 728573901 is about 899.8246164424.

The spelling of 728573901 in words is "seven hundred twenty-eight million, five hundred seventy-three thousand, nine hundred one".