20233423 has 24 divisors (see below), whose sum is σ = 25134720. Its totient is φ = 16193520.

The previous prime is 20233363. The next prime is 20233427. The reversal of 20233423 is 32433202.

It is a de Polignac number, because none of the positive numbers 2^k-20233423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 20233423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20233427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95788 + ... + 95998.

It is an arithmetic number, because the mean of its divisors is an integer number (1047280).

Almost surely, 2^20233423 is an apocalyptic number.

20233423 is a deficient number, since it is larger than the sum of its proper divisors (4901297).

20233423 is a wasteful number, since it uses less digits than its factorization.

20233423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 20233423 is about 4498.1577340062. The cubic root of 20233423 is about 272.4936923041.

Adding to 20233423 its reverse (32433202), we get a palindrome (52666625).

The spelling of 20233423 in words is "twenty million, two hundred thirty-three thousand, four hundred twenty-three".