22657222 has 8 divisors (see below), whose sum is σ = 38840976. Its totient is φ = 9710232.

The previous prime is 22657213. The next prime is 22657237. The reversal of 22657222 is 22275622.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 809173 + ... + 809200.

It is an arithmetic number, because the mean of its divisors is an integer number (4855122).

Almost surely, 2^22657222 is an apocalyptic number.

22657222 is a deficient number, since it is larger than the sum of its proper divisors (16183754).

22657222 is a wasteful number, since it uses less digits than its factorization.

22657222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618382.

The product of its digits is 6720, while the sum is 28.

The square root of 22657222 is about 4759.9602939520. The cubic root of 22657222 is about 282.9668454960.

The spelling of 22657222 in words is "twenty-two million, six hundred fifty-seven thousand, two hundred twenty-two".