22866991 has 8 divisors (see below), whose sum is σ = 27270144. Its totient is φ = 18747960.

The previous prime is 22866973. The next prime is 22867003. The reversal of 22866991 is 19966822.

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

It is not a de Polignac number, because 22866991 - 2⁵ = 22866959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22866091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70855 + ... + 71176.

It is an arithmetic number, because the mean of its divisors is an integer number (3408768).

Almost surely, 2^22866991 is an apocalyptic number.

22866991 is a deficient number, since it is larger than the sum of its proper divisors (4403153).

22866991 is a wasteful number, since it uses less digits than its factorization.

22866991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142061.

The product of its digits is 93312, while the sum is 43.

The square root of 22866991 is about 4781.9442698551. The cubic root of 22866991 is about 283.8374350666.

The spelling of 22866991 in words is "twenty-two million, eight hundred sixty-six thousand, nine hundred ninety-one".