72224323 has 4 divisors (see below), whose sum is σ = 72709200. Its totient is φ = 71739448.

The previous prime is 72224311. The next prime is 72224351. The reversal of 72224323 is 32342227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32342227 = 337 ⋅95971.

It is a cyclic number.

It is not a de Polignac number, because 72224323 - 2⁵ = 72224291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72224303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242215 + ... + 242512.

It is an arithmetic number, because the mean of its divisors is an integer number (18177300).

Almost surely, 2^72224323 is an apocalyptic number.

72224323 is a deficient number, since it is larger than the sum of its proper divisors (484877).

72224323 is a wasteful number, since it uses less digits than its factorization.

72224323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484876.

The product of its digits is 4032, while the sum is 25.

The square root of 72224323 is about 8498.4894540148. The cubic root of 72224323 is about 416.4483635828.

The spelling of 72224323 in words is "seventy-two million, two hundred twenty-four thousand, three hundred twenty-three".