22818945 has 24 divisors (see below), whose sum is σ = 37749888. Its totient is φ = 11770080.

The previous prime is 22818931. The next prime is 22818949. The reversal of 22818945 is 54981822.

It is not a de Polignac number, because 22818945 - 2²³ = 14430337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22818949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13624 + ... + 15206.

It is an arithmetic number, because the mean of its divisors is an integer number (1572912).

Almost surely, 2^22818945 is an apocalyptic number.

It is an amenable number.

22818945 is a deficient number, since it is larger than the sum of its proper divisors (14930943).

22818945 is a wasteful number, since it uses less digits than its factorization.

22818945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653 (or 1622 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 22818945 is about 4776.9179394250. The cubic root of 22818945 is about 283.6385047150.

The spelling of 22818945 in words is "twenty-two million, eight hundred eighteen thousand, nine hundred forty-five".