22808623 has 4 divisors (see below), whose sum is σ = 22881808. Its totient is φ = 22735440.

The previous prime is 22808581. The next prime is 22808641. The reversal of 22808623 is 32680822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32680822 = 2 ⋅16340411.

It is a cyclic number.

It is not a de Polignac number, because 22808623 - 2¹³ = 22800431 is a prime.

It is a super-2 number, since 2×22808623² = 1040466566312258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22808323) 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, 36123 + ... + 36748.

It is an arithmetic number, because the mean of its divisors is an integer number (5720452).

Almost surely, 2^22808623 is an apocalyptic number.

22808623 is a deficient number, since it is larger than the sum of its proper divisors (73185).

22808623 is an equidigital number, since it uses as much as digits as its factorization.

22808623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73184.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 22808623 is about 4775.8374134805. The cubic root of 22808623 is about 283.5957309262.

The spelling of 22808623 in words is "twenty-two million, eight hundred eight thousand, six hundred twenty-three".