728563875 has 64 divisors (see below), whose sum is σ = 1313894400. Its totient is φ = 356400000.

The previous prime is 728563867. The next prime is 728563877. The reversal of 728563875 is 578365827.

It is not a de Polignac number, because 728563875 - 2³ = 728563867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728563877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 969750 + ... + 970500.

It is an arithmetic number, because the mean of its divisors is an integer number (20529600).

Almost surely, 2^728563875 is an apocalyptic number.

728563875 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

728563875 is a deficient number, since it is larger than the sum of its proper divisors (585330525).

728563875 is a wasteful number, since it uses less digits than its factorization.

728563875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 971 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 51.

The square root of 728563875 is about 26991.9224028227. The cubic root of 728563875 is about 899.8204888890.

The spelling of 728563875 in words is "seven hundred twenty-eight million, five hundred sixty-three thousand, eight hundred seventy-five".