72231226 has 8 divisors (see below), whose sum is σ = 109964160. Its totient is φ = 35576508.

The previous prime is 72231223. The next prime is 72231233. The reversal of 72231226 is 62213227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 72231226.

It is not an unprimeable number, because it can be changed into a prime (72231221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269386 + ... + 269653.

It is an arithmetic number, because the mean of its divisors is an integer number (13745520).

Almost surely, 2^72231226 is an apocalyptic number.

72231226 is a deficient number, since it is larger than the sum of its proper divisors (37732934).

72231226 is a wasteful number, since it uses less digits than its factorization.

72231226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539108.

The product of its digits is 2016, while the sum is 25.

The square root of 72231226 is about 8498.8955753086. The cubic root of 72231226 is about 416.4616308191.

The spelling of 72231226 in words is "seventy-two million, two hundred thirty-one thousand, two hundred twenty-six".