728515475 has 24 divisors (see below), whose sum is σ = 923110560. Its totient is φ = 570136320.

The previous prime is 728515453. The next prime is 728515477. The reversal of 728515475 is 574515827.

728515475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 728515475 - 2¹² = 728511379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728515477) 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, 644711 + ... + 645839.

It is an arithmetic number, because the mean of its divisors is an integer number (38462940).

Almost surely, 2^728515475 is an apocalyptic number.

728515475 is a deficient number, since it is larger than the sum of its proper divisors (194595085).

728515475 is a wasteful number, since it uses less digits than its factorization.

728515475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679 (or 1674 counting only the distinct ones).

The product of its digits is 392000, while the sum is 44.

The square root of 728515475 is about 26991.0258234103. The cubic root of 728515475 is about 899.8005628045.

The spelling of 728515475 in words is "seven hundred twenty-eight million, five hundred fifteen thousand, four hundred seventy-five".