22520023 has 4 divisors (see below), whose sum is σ = 22738768. Its totient is φ = 22301280.

The previous prime is 22519999. The next prime is 22520033. The reversal of 22520023 is 32002522.

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 22520023 - 2¹³ = 22511831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22519979 and 22520006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520033) 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, 109218 + ... + 109423.

It is an arithmetic number, because the mean of its divisors is an integer number (5684692).

Almost surely, 2^22520023 is an apocalyptic number.

22520023 is a deficient number, since it is larger than the sum of its proper divisors (218745).

22520023 is a wasteful number, since it uses less digits than its factorization.

22520023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218744.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 22520023 is about 4745.5266304173. The cubic root of 22520023 is about 282.3945276769.

Adding to 22520023 its reverse (32002522), we get a palindrome (54522545).

The spelling of 22520023 in words is "twenty-two million, five hundred twenty thousand, twenty-three".