22213923 has 16 divisors (see below), whose sum is σ = 30490656. Its totient is φ = 14376960.

The previous prime is 22213921. The next prime is 22213927. The reversal of 22213923 is 32931222.

It is not a de Polignac number, because 22213923 - 2¹ = 22213921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22213893 and 22213902.

It is not an unprimeable number, because it can be changed into a prime (22213921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38211 + ... + 38787.

It is an arithmetic number, because the mean of its divisors is an integer number (1905666).

Almost surely, 2^22213923 is an apocalyptic number.

22213923 is a deficient number, since it is larger than the sum of its proper divisors (8276733).

22213923 is a wasteful number, since it uses less digits than its factorization.

22213923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934.

The product of its digits is 1296, while the sum is 24.

The square root of 22213923 is about 4713.1648602611. The cubic root of 22213923 is about 281.1092182338.

The spelling of 22213923 in words is "twenty-two million, two hundred thirteen thousand, nine hundred twenty-three".