22089823 has 4 divisors (see below), whose sum is σ = 25245520. Its totient is φ = 18934128.

The previous prime is 22089803. The next prime is 22089839. The reversal of 22089823 is 32898022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32898022 = 2 ⋅16449011.

It is a cyclic number.

It is not a de Polignac number, because 22089823 - 2⁵ = 22089791 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 (22089803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1577838 + ... + 1577851.

It is an arithmetic number, because the mean of its divisors is an integer number (6311380).

Almost surely, 2^22089823 is an apocalyptic number.

22089823 is a deficient number, since it is larger than the sum of its proper divisors (3155697).

22089823 is an equidigital number, since it uses as much as digits as its factorization.

22089823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155696.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 22089823 is about 4699.9811701750. The cubic root of 22089823 is about 280.5847600630.

The spelling of 22089823 in words is "twenty-two million, eighty-nine thousand, eight hundred twenty-three".