22888891 has 4 divisors (see below), whose sum is σ = 22928472. Its totient is φ = 22849312.

The previous prime is 22888889. The next prime is 22888913. The reversal of 22888891 is 19888822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22888891 - 2¹ = 22888889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22888861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18910 + ... + 20083.

It is an arithmetic number, because the mean of its divisors is an integer number (5732118).

Almost surely, 2^22888891 is an apocalyptic number.

22888891 is a deficient number, since it is larger than the sum of its proper divisors (39581).

22888891 is an equidigital number, since it uses as much as digits as its factorization.

22888891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39580.

The product of its digits is 147456, while the sum is 46.

The square root of 22888891 is about 4784.2335854346. The cubic root of 22888891 is about 283.9280176956.

The spelling of 22888891 in words is "twenty-two million, eight hundred eighty-eight thousand, eight hundred ninety-one".