72384917 has 8 divisors (see below), whose sum is σ = 80304480. Its totient is φ = 64688560.

The previous prime is 72384901. The next prime is 72384919. The reversal of 72384917 is 71948327.

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 72384917 - 2⁴ = 72384901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72384919) 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, 55118 + ... + 56415.

It is an arithmetic number, because the mean of its divisors is an integer number (10038060).

Almost surely, 2^72384917 is an apocalyptic number.

It is an amenable number.

72384917 is a deficient number, since it is larger than the sum of its proper divisors (7919563).

72384917 is a wasteful number, since it uses less digits than its factorization.

72384917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111603.

The product of its digits is 84672, while the sum is 41.

The square root of 72384917 is about 8507.9325925868. The cubic root of 72384917 is about 416.7567989192.

The spelling of 72384917 in words is "seventy-two million, three hundred eighty-four thousand, nine hundred seventeen".