22320823 has 6 divisors (see below), whose sum is σ = 25965096. Its totient is φ = 19132092.

The previous prime is 22320803. The next prime is 22320829. The reversal of 22320823 is 32802322.

It is a de Polignac number, because none of the positive numbers 2^k-22320823 is a prime.

It is a super-3 number, since 3×22320823³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22320794 and 22320803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22320829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 227715 + ... + 227812.

It is an arithmetic number, because the mean of its divisors is an integer number (4327516).

Almost surely, 2^22320823 is an apocalyptic number.

22320823 is a deficient number, since it is larger than the sum of its proper divisors (3644273).

22320823 is an equidigital number, since it uses as much as digits as its factorization.

22320823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455541 (or 455534 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 22320823 is about 4724.4918245246. The cubic root of 22320823 is about 281.5594238667.

The spelling of 22320823 in words is "twenty-two million, three hundred twenty thousand, eight hundred twenty-three".