72224423 has 4 divisors (see below), whose sum is σ = 72334680. Its totient is φ = 72114168.

The previous prime is 72224419. The next prime is 72224441. The reversal of 72224423 is 32442227.

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 72224423 - 2² = 72224419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72224392 and 72224401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72224023) 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, 54140 + ... + 55457.

It is an arithmetic number, because the mean of its divisors is an integer number (18083670).

Almost surely, 2^72224423 is an apocalyptic number.

72224423 is a deficient number, since it is larger than the sum of its proper divisors (110257).

72224423 is a wasteful number, since it uses less digits than its factorization.

72224423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110256.

The product of its digits is 5376, while the sum is 26.

The square root of 72224423 is about 8498.4953374112. The cubic root of 72224423 is about 416.4485557840.

The spelling of 72224423 in words is "seventy-two million, two hundred twenty-four thousand, four hundred twenty-three".