22004023 has 4 divisors (see below), whose sum is σ = 22095568. Its totient is φ = 21912480.

The previous prime is 22004009. The next prime is 22004039. The reversal of 22004023 is 32040022.

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 22004023 - 2¹⁷ = 21872951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22003994 and 22004012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22004053) 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, 45411 + ... + 45892.

It is an arithmetic number, because the mean of its divisors is an integer number (5523892).

Almost surely, 2^22004023 is an apocalyptic number.

22004023 is a deficient number, since it is larger than the sum of its proper divisors (91545).

22004023 is an equidigital number, since it uses as much as digits as its factorization.

22004023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91544.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 22004023 is about 4690.8445934608. The cubic root of 22004023 is about 280.2210117279.

Adding to 22004023 its reverse (32040022), we get a palindrome (54044045).

The spelling of 22004023 in words is "twenty-two million, four thousand, twenty-three".