728635075 has 12 divisors (see below), whose sum is σ = 1032580240. Its totient is φ = 499635360.

The previous prime is 728635021. The next prime is 728635087. The reversal of 728635075 is 570536827.

It is not a de Polignac number, because 728635075 - 2⁹ = 728634563 is a prime.

It is a hoax number, since the sum of its digits (43) 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 11 ways as a sum of consecutive naturals, for example, 2081640 + ... + 2081989.

Almost surely, 2^728635075 is an apocalyptic number.

728635075 is a deficient number, since it is larger than the sum of its proper divisors (303945165).

728635075 is a wasteful number, since it uses less digits than its factorization.

728635075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4163646 (or 4163641 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The square root of 728635075 is about 26993.2412836991. The cubic root of 728635075 is about 899.8498000376.

The spelling of 728635075 in words is "seven hundred twenty-eight million, six hundred thirty-five thousand, seventy-five".