22891023 has 12 divisors (see below), whose sum is σ = 33113808. Its totient is φ = 15238080.

The previous prime is 22891009. The next prime is 22891031. The reversal of 22891023 is 32019822.

It is a happy number.

It is not a de Polignac number, because 22891023 - 2⁸ = 22890767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22891073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6486 + ... + 9372.

It is an arithmetic number, because the mean of its divisors is an integer number (2759484).

Almost surely, 2^22891023 is an apocalyptic number.

22891023 is a deficient number, since it is larger than the sum of its proper divisors (10222785).

22891023 is a wasteful number, since it uses less digits than its factorization.

22891023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774 (or 3771 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 22891023 is about 4784.4563954539. The cubic root of 22891023 is about 283.9368329726.

The spelling of 22891023 in words is "twenty-two million, eight hundred ninety-one thousand, twenty-three".