22420423 has 8 divisors (see below), whose sum is σ = 23492448. Its totient is φ = 21356544.

The previous prime is 22420421. The next prime is 22420427. The reversal of 22420423 is 32402422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22420423 - 2¹ = 22420421 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 22420423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22420421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4015 + ... + 7807.

It is an arithmetic number, because the mean of its divisors is an integer number (2936556).

Almost surely, 2^22420423 is an apocalyptic number.

22420423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22420423 is a deficient number, since it is larger than the sum of its proper divisors (1072025).

22420423 is a wasteful number, since it uses less digits than its factorization.

22420423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 22420423 is about 4735.0209080848. The cubic root of 22420423 is about 281.9775940819.

Adding to 22420423 its reverse (32402422), we get a palindrome (54822845).

The spelling of 22420423 in words is "twenty-two million, four hundred twenty thousand, four hundred twenty-three".