22026891 has 4 divisors (see below), whose sum is σ = 29369192. Its totient is φ = 14684592.

The previous prime is 22026889. The next prime is 22026899. The reversal of 22026891 is 19862022.

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

It is not a de Polignac number, because 22026891 - 2¹ = 22026889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22026899) 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, 3671146 + ... + 3671151.

It is an arithmetic number, because the mean of its divisors is an integer number (7342298).

Almost surely, 2^22026891 is an apocalyptic number.

22026891 is a deficient number, since it is larger than the sum of its proper divisors (7342301).

22026891 is an equidigital number, since it uses as much as digits as its factorization.

22026891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7342300.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 22026891 is about 4693.2814746188. The cubic root of 22026891 is about 280.3180527020.

The spelling of 22026891 in words is "twenty-two million, twenty-six thousand, eight hundred ninety-one".