22428923 has 6 divisors (see below), whose sum is σ = 24653412. Its totient is φ = 20389820.

The previous prime is 22428883. The next prime is 22428937. The reversal of 22428923 is 32982422.

It is not a de Polignac number, because 22428923 - 2⁶ = 22428859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22428923.

It is not an unprimeable number, because it can be changed into a prime (22428943) 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, 92561 + ... + 92802.

It is an arithmetic number, because the mean of its divisors is an integer number (4108902).

Almost surely, 2^22428923 is an apocalyptic number.

22428923 is a deficient number, since it is larger than the sum of its proper divisors (2224489).

22428923 is a wasteful number, since it uses less digits than its factorization.

22428923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185385 (or 185374 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 22428923 is about 4735.9183903442. The cubic root of 22428923 is about 282.0132238991.

The spelling of 22428923 in words is "twenty-two million, four hundred twenty-eight thousand, nine hundred twenty-three".