72857295 has 24 divisors (see below), whose sum is σ = 144327456. Its totient is φ = 33306048.

The previous prime is 72857273. The next prime is 72857297. The reversal of 72857295 is 59275827.

It is a happy number.

72857295 is a `hidden beast` number, since 72 + 8 + 572 + 9 + 5 = 666.

It is not a de Polignac number, because 72857295 - 2⁹ = 72856783 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 72857295.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72857297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115332 + ... + 115961.

It is an arithmetic number, because the mean of its divisors is an integer number (6013644).

Almost surely, 2^72857295 is an apocalyptic number.

72857295 is a deficient number, since it is larger than the sum of its proper divisors (71470161).

72857295 is a wasteful number, since it uses less digits than its factorization.

72857295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231311 (or 231308 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 72857295 is about 8535.6484815156. The cubic root of 72857295 is about 417.6614074657.

The spelling of 72857295 in words is "seventy-two million, eight hundred fifty-seven thousand, two hundred ninety-five".