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22423 = 171319
BaseRepresentation
bin101011110010111
31010202111
411132113
51204143
6251451
7122242
oct53627
933674
1022423
1115935
1210b87
13a28b
148259
15699d
hex5797

22423 has 4 divisors (see below), whose sum is σ = 23760. Its totient is φ = 21088.

The previous prime is 22409. The next prime is 22433. The reversal of 22423 is 32422.

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 22423 - 25 = 22391 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22433) 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, 643 + ... + 676.

It is an arithmetic number, because the mean of its divisors is an integer number (5940).

222423 is an apocalyptic number.

22423 is a deficient number, since it is larger than the sum of its proper divisors (1337).

22423 is a wasteful number, since it uses less digits than its factorization.

22423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336.

The product of its digits is 96, while the sum is 13.

The square root of 22423 is about 149.7431133642. The cubic root of 22423 is about 28.1988397155.

Adding to 22423 its reverse (32422), we get a palindrome (54845).

Subtracting 22423 from its reverse (32422), we obtain a palindrome (9999).

The spelling of 22423 in words is "twenty-two thousand, four hundred twenty-three", and thus it is an iban number.

Divisors: 1 17 1319 22423