72597285 has 24 divisors (see below), whose sum is σ = 127089144. Its totient is φ = 38332800.

The previous prime is 72597277. The next prime is 72597311. The reversal of 72597285 is 58279527.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33246756 + 39350529 = 5766^2 + 6273^2 .

It is not a de Polignac number, because 72597285 - 2³ = 72597277 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 72597285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3442 + ... + 12531.

It is an arithmetic number, because the mean of its divisors is an integer number (5295381).

Almost surely, 2^72597285 is an apocalyptic number.

It is an amenable number.

72597285 is a deficient number, since it is larger than the sum of its proper divisors (54491859).

72597285 is a wasteful number, since it uses less digits than its factorization.

72597285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16085 (or 16082 counting only the distinct ones).

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

The square root of 72597285 is about 8520.4040397155. The cubic root of 72597285 is about 417.1639711933.

The spelling of 72597285 in words is "seventy-two million, five hundred ninety-seven thousand, two hundred eighty-five".