72308589 has 16 divisors (see below), whose sum is σ = 98786304. Its totient is φ = 47028800.

The previous prime is 72308581. The next prime is 72308609. The reversal of 72308589 is 98580327.

It is a cyclic number.

It is not a de Polignac number, because 72308589 - 2³ = 72308581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72308589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72308581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29179 + ... + 31559.

It is an arithmetic number, because the mean of its divisors is an integer number (6174144).

Almost surely, 2^72308589 is an apocalyptic number.

It is an amenable number.

72308589 is a deficient number, since it is larger than the sum of its proper divisors (26477715).

72308589 is a wasteful number, since it uses less digits than its factorization.

72308589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 72308589 is about 8503.4457133564. The cubic root of 72308589 is about 416.6102610223.

The spelling of 72308589 in words is "seventy-two million, three hundred eight thousand, five hundred eighty-nine".