72589812 has 12 divisors (see below), whose sum is σ = 169376256. Its totient is φ = 24196600.

The previous prime is 72589799. The next prime is 72589859. The reversal of 72589812 is 21898527.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3024564 + ... + 3024587.

It is an arithmetic number, because the mean of its divisors is an integer number (14114688).

Almost surely, 2^72589812 is an apocalyptic number.

It is an amenable number.

72589812 is an abundant number, since it is smaller than the sum of its proper divisors (96786444).

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

72589812 is a wasteful number, since it uses less digits than its factorization.

72589812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6049158 (or 6049156 counting only the distinct ones).

The product of its digits is 80640, while the sum is 42.

The square root of 72589812 is about 8519.9654928879. The cubic root of 72589812 is about 417.1496567309.

The spelling of 72589812 in words is "seventy-two million, five hundred eighty-nine thousand, eight hundred twelve".