728853615 has 96 divisors (see below), whose sum is σ = 1485993600. Its totient is φ = 323601408.

The previous prime is 728853613. The next prime is 728853637. The reversal of 728853615 is 516358827.

728853615 is a `hidden beast` number, since 7 + 28 + 8 + 5 + 3 + 615 = 666.

It is not a de Polignac number, because 728853615 - 2¹ = 728853613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728853611) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2487409 + ... + 2487701.

It is an arithmetic number, because the mean of its divisors is an integer number (15479100).

Almost surely, 2^728853615 is an apocalyptic number.

728853615 is an abundant number, since it is smaller than the sum of its proper divisors (757139985).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728853615 is a wasteful number, since it uses less digits than its factorization.

728853615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 510 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 728853615 is about 26997.2890305675. The cubic root of 728853615 is about 899.9397552266.

The spelling of 728853615 in words is "seven hundred twenty-eight million, eight hundred fifty-three thousand, six hundred fifteen".