22222945 has 8 divisors (see below), whose sum is σ = 27827136. Its totient is φ = 17005296.

The previous prime is 22222909. The next prime is 22222957. The reversal of 22222945 is 54922222.

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

It is a cyclic number.

It is not a de Polignac number, because 22222945 - 2⁷ = 22222817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96507 + ... + 96736.

It is an arithmetic number, because the mean of its divisors is an integer number (3478392).

Almost surely, 2^22222945 is an apocalyptic number.

It is an amenable number.

22222945 is a deficient number, since it is larger than the sum of its proper divisors (5604191).

22222945 is a wasteful number, since it uses less digits than its factorization.

22222945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193271.

The product of its digits is 5760, while the sum is 28.

The square root of 22222945 is about 4714.1218694472. The cubic root of 22222945 is about 281.1472698061.

The spelling of 22222945 in words is "twenty-two million, two hundred twenty-two thousand, nine hundred forty-five".