22006823 has 16 divisors (see below), whose sum is σ = 24377760. Its totient is φ = 19777536.

The previous prime is 22006801. The next prime is 22006843. The reversal of 22006823 is 32860022.

It is a de Polignac number, because none of the positive numbers 2^k-22006823 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 (22006843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36815 + ... + 37407.

It is an arithmetic number, because the mean of its divisors is an integer number (1523610).

Almost surely, 2^22006823 is an apocalyptic number.

22006823 is a deficient number, since it is larger than the sum of its proper divisors (2370937).

22006823 is a wasteful number, since it uses less digits than its factorization.

22006823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 22006823 is about 4691.1430376828. The cubic root of 22006823 is about 280.2328972144.

Adding to 22006823 its reverse (32860022), we get a palindrome (54866845).

The spelling of 22006823 in words is "twenty-two million, six thousand, eight hundred twenty-three".