72238759 has 4 divisors (see below), whose sum is σ = 72306304. Its totient is φ = 72171216.

The previous prime is 72238757. The next prime is 72238781. The reversal of 72238759 is 95783227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72238759 - 2¹ = 72238757 is a prime.

It is a super-3 number, since 3×72238759³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72238757) by changing a digit.

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, 32142 + ... + 34315.

It is an arithmetic number, because the mean of its divisors is an integer number (18076576).

Almost surely, 2^72238759 is an apocalyptic number.

72238759 is a deficient number, since it is larger than the sum of its proper divisors (67545).

72238759 is a wasteful number, since it uses less digits than its factorization.

72238759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67544.

The product of its digits is 211680, while the sum is 43.

The square root of 72238759 is about 8499.3387389843. The cubic root of 72238759 is about 416.4761079207.

The spelling of 72238759 in words is "seventy-two million, two hundred thirty-eight thousand, seven hundred fifty-nine".