728533953 has 16 divisors (see below), whose sum is σ = 1233496960. Its totient is φ = 416305008.

The previous prime is 728533951. The next prime is 728533987. The reversal of 728533953 is 359335827.

728533953 is a `hidden beast` number, since 7 + 28 + 533 + 95 + 3 = 666.

728533953 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 728533953 - 2¹ = 728533951 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 728533899 and 728533908.

It is not an unprimeable number, because it can be changed into a prime (728533951) 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, 1927150 + ... + 1927527.

It is an arithmetic number, because the mean of its divisors is an integer number (77093560).

Almost surely, 2^728533953 is an apocalyptic number.

It is an amenable number.

728533953 is a deficient number, since it is larger than the sum of its proper divisors (504963007).

728533953 is a wasteful number, since it uses less digits than its factorization.

728533953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3854693 (or 3854687 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 728533953 is about 26991.3681201972. The cubic root of 728533953 is about 899.8081702266.

The spelling of 728533953 in words is "seven hundred twenty-eight million, five hundred thirty-three thousand, nine hundred fifty-three".