22306823 has 16 divisors (see below), whose sum is σ = 27939840. Its totient is φ = 17301600.

The previous prime is 22306807. The next prime is 22306883. The reversal of 22306823 is 32860322.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22306823 - 2⁴ = 22306807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22306792 and 22306801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22306883) 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, 20333 + ... + 21401.

It is an arithmetic number, because the mean of its divisors is an integer number (1746240).

Almost surely, 2^22306823 is an apocalyptic number.

22306823 is a deficient number, since it is larger than the sum of its proper divisors (5633017).

22306823 is a wasteful number, since it uses less digits than its factorization.

22306823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 22306823 is about 4723.0099512917. The cubic root of 22306823 is about 281.5005452678.

The spelling of 22306823 in words is "twenty-two million, three hundred six thousand, eight hundred twenty-three".