72388589 has 8 divisors (see below), whose sum is σ = 89093760. Its totient is φ = 57274416.

The previous prime is 72388579. The next prime is 72388643. The reversal of 72388589 is 98588327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72388589 - 2⁴ = 72388573 is a prime.

It is a super-3 number, since 3×72388589³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72388549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397649 + ... + 397830.

It is an arithmetic number, because the mean of its divisors is an integer number (11136720).

Almost surely, 2^72388589 is an apocalyptic number.

It is an amenable number.

72388589 is a deficient number, since it is larger than the sum of its proper divisors (16705171).

72388589 is a wasteful number, since it uses less digits than its factorization.

72388589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795499.

The product of its digits is 967680, while the sum is 50.

The square root of 72388589 is about 8508.1483884568. The cubic root of 72388589 is about 416.7638459908.

The spelling of 72388589 in words is "seventy-two million, three hundred eighty-eight thousand, five hundred eighty-nine".