22391423 has 4 divisors (see below), whose sum is σ = 22404240. Its totient is φ = 22378608.

The previous prime is 22391407. The next prime is 22391429. The reversal of 22391423 is 32419322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22391423 - 2⁴ = 22391407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22391392 and 22391401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22391429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3278 + ... + 7451.

It is an arithmetic number, because the mean of its divisors is an integer number (5601060).

Almost surely, 2^22391423 is an apocalyptic number.

22391423 is a deficient number, since it is larger than the sum of its proper divisors (12817).

22391423 is a wasteful number, since it uses less digits than its factorization.

22391423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12816.

The product of its digits is 2592, while the sum is 26.

The square root of 22391423 is about 4731.9576287199. The cubic root of 22391423 is about 281.8559657126.

The spelling of 22391423 in words is "twenty-two million, three hundred ninety-one thousand, four hundred twenty-three".