22993866 has 48 divisors (see below), whose sum is σ = 58339008. Its totient is φ = 6408000.

The previous prime is 22993837. The next prime is 22993871. The reversal of 22993866 is 66839922.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2941 + ... + 7391.

It is an arithmetic number, because the mean of its divisors is an integer number (1215396).

Almost surely, 2^22993866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22993866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29169504).

22993866 is an abundant number, since it is smaller than the sum of its proper divisors (35345142).

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

22993866 is a wasteful number, since it uses less digits than its factorization.

22993866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4507 (or 4504 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 22993866 is about 4795.1919669602. The cubic root of 22993866 is about 284.3614141720.

The spelling of 22993866 in words is "twenty-two million, nine hundred ninety-three thousand, eight hundred sixty-six".