72594293 has 4 divisors (see below), whose sum is σ = 72767148. Its totient is φ = 72421440.

The previous prime is 72594289. The next prime is 72594317. The reversal of 72594293 is 39249527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15697444 + 56896849 = 3962^2 + 7543^2 .

It is a cyclic number.

It is not a de Polignac number, because 72594293 - 2² = 72594289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72594293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72594283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85796 + ... + 86637.

It is an arithmetic number, because the mean of its divisors is an integer number (18191787).

Almost surely, 2^72594293 is an apocalyptic number.

It is an amenable number.

72594293 is a deficient number, since it is larger than the sum of its proper divisors (172855).

72594293 is a wasteful number, since it uses less digits than its factorization.

72594293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172854.

The product of its digits is 136080, while the sum is 41.

The square root of 72594293 is about 8520.2284593783. The cubic root of 72594293 is about 417.1582401629.

The spelling of 72594293 in words is "seventy-two million, five hundred ninety-four thousand, two hundred ninety-three".