22397868 has 36 divisors (see below), whose sum is σ = 56762160. Its totient is φ = 7446816.

The previous prime is 22397833. The next prime is 22397911. The reversal of 22397868 is 86879322.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 23913 + ... + 24831.

Almost surely, 2^22397868 is an apocalyptic number.

It is an amenable number.

22397868 is an abundant number, since it is smaller than the sum of its proper divisors (34364292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22397868 is a wasteful number, since it uses less digits than its factorization.

22397868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606 (or 1601 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 22397868 is about 4732.6385875112. The cubic root of 22397868 is about 281.8830056412.

The spelling of 22397868 in words is "twenty-two million, three hundred ninety-seven thousand, eight hundred sixty-eight".