22818897 has 12 divisors (see below), whose sum is σ = 33005700. Its totient is φ = 15191808.

The previous prime is 22818889. The next prime is 22818931. The reversal of 22818897 is 79881822.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21566736 + 1252161 = 4644^2 + 1119^2 .

It is not a de Polignac number, because 22818897 - 2³ = 22818889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22818827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8233 + ... + 10649.

It is an arithmetic number, because the mean of its divisors is an integer number (2750475).

Almost surely, 2^22818897 is an apocalyptic number.

It is an amenable number.

22818897 is a deficient number, since it is larger than the sum of its proper divisors (10186803).

22818897 is a wasteful number, since it uses less digits than its factorization.

22818897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472 (or 3469 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 22818897 is about 4776.9129152623. The cubic root of 22818897 is about 283.6383058355.

The spelling of 22818897 in words is "twenty-two million, eight hundred eighteen thousand, eight hundred ninety-seven".