22445623 has 4 divisors (see below), whose sum is σ = 23219640. Its totient is φ = 21671608.

The previous prime is 22445617. The next prime is 22445639. The reversal of 22445623 is 32654422.

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 22445623 - 2¹³ = 22437431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22445591 and 22445600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22445653) 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, 386965 + ... + 387022.

It is an arithmetic number, because the mean of its divisors is an integer number (5804910).

Almost surely, 2^22445623 is an apocalyptic number.

22445623 is a deficient number, since it is larger than the sum of its proper divisors (774017).

22445623 is an equidigital number, since it uses as much as digits as its factorization.

22445623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774016.

The product of its digits is 11520, while the sum is 28.

The square root of 22445623 is about 4737.6811838704. The cubic root of 22445623 is about 282.0831998023.

The spelling of 22445623 in words is "twenty-two million, four hundred forty-five thousand, six hundred twenty-three".