72232223 has 6 divisors (see below), whose sum is σ = 84025296. Its totient is φ = 61913292.

The previous prime is 72232187. The next prime is 72232247. The reversal of 72232223 is 32223227.

It is not a de Polignac number, because 72232223 - 2⁶ = 72232159 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 (72232273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 737015 + ... + 737112.

It is an arithmetic number, because the mean of its divisors is an integer number (14004216).

Almost surely, 2^72232223 is an apocalyptic number.

72232223 is a deficient number, since it is larger than the sum of its proper divisors (11793073).

72232223 is a wasteful number, since it uses less digits than its factorization.

72232223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474141 (or 1474134 counting only the distinct ones).

The product of its digits is 2016, while the sum is 23.

The square root of 72232223 is about 8498.9542297862. The cubic root of 72232223 is about 416.4635469356.

The spelling of 72232223 in words is "seventy-two million, two hundred thirty-two thousand, two hundred twenty-three".