22990643 has 8 divisors (see below), whose sum is σ = 24797136. Its totient is φ = 21189600.

The previous prime is 22990633. The next prime is 22990651. The reversal of 22990643 is 34609922.

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

It is a cyclic number.

It is not a de Polignac number, because 22990643 - 2¹² = 22986547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22990603) 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, 13373 + ... + 14993.

It is an arithmetic number, because the mean of its divisors is an integer number (3099642).

Almost surely, 2^22990643 is an apocalyptic number.

22990643 is a deficient number, since it is larger than the sum of its proper divisors (1806493).

22990643 is a wasteful number, since it uses less digits than its factorization.

22990643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 22990643 is about 4794.8558893881. The cubic root of 22990643 is about 284.3481274450.

The spelling of 22990643 in words is "twenty-two million, nine hundred ninety thousand, six hundred forty-three".