728500885 has 24 divisors (see below), whose sum is σ = 1021485600. Its totient is φ = 497304864.

The previous prime is 728500841. The next prime is 728500889. The reversal of 728500885 is 588005827.

It is not a de Polignac number, because 728500885 - 2¹³ = 728492693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728500889) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49066 + ... + 62164.

It is an arithmetic number, because the mean of its divisors is an integer number (42561900).

Almost surely, 2^728500885 is an apocalyptic number.

It is an amenable number.

728500885 is a deficient number, since it is larger than the sum of its proper divisors (292984715).

728500885 is a wasteful number, since it uses less digits than its factorization.

728500885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13345 (or 13338 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 43.

The square root of 728500885 is about 26990.7555470387. The cubic root of 728500885 is about 899.7945559873.

The spelling of 728500885 in words is "seven hundred twenty-eight million, five hundred thousand, eight hundred eighty-five".