72422273 has 8 divisors (see below), whose sum is σ = 90292800. Its totient is φ = 56432880.

The previous prime is 72422179. The next prime is 72422279. The reversal of 72422273 is 37222427.

It is a happy number.

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

It is not a de Polignac number, because 72422273 - 2⁸ = 72422017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72422279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470198 + ... + 470351.

It is an arithmetic number, because the mean of its divisors is an integer number (11286600).

Almost surely, 2^72422273 is an apocalyptic number.

It is an amenable number.

72422273 is a deficient number, since it is larger than the sum of its proper divisors (17870527).

72422273 is a wasteful number, since it uses less digits than its factorization.

72422273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940567.

The product of its digits is 9408, while the sum is 29.

The square root of 72422273 is about 8510.1276723678. The cubic root of 72422273 is about 416.8284790898.

The spelling of 72422273 in words is "seventy-two million, four hundred twenty-two thousand, two hundred seventy-three".