72385745 has 8 divisors (see below), whose sum is σ = 91972584. Its totient is φ = 54502144.

The previous prime is 72385739. The next prime is 72385771. The reversal of 72385745 is 54758327.

It can be written as a sum of positive squares in 4 ways, for example, as 543169 + 71842576 = 737^2 + 8476^2 .

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 72385745 - 2⁶ = 72385681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425714 + ... + 425883.

It is an arithmetic number, because the mean of its divisors is an integer number (11496573).

Almost surely, 2^72385745 is an apocalyptic number.

It is an amenable number.

72385745 is a deficient number, since it is larger than the sum of its proper divisors (19586839).

72385745 is a wasteful number, since it uses less digits than its factorization.

72385745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851619.

The product of its digits is 235200, while the sum is 41.

The square root of 72385745 is about 8507.9812529178. The cubic root of 72385745 is about 416.7583879856.

It can be divided in two parts, 723 and 85745, that added together give a palindrome (86468).

The spelling of 72385745 in words is "seventy-two million, three hundred eighty-five thousand, seven hundred forty-five".