22143243 has 8 divisors (see below), whose sum is σ = 29550400. Its totient is φ = 14749128.

The previous prime is 22143229. The next prime is 22143263. The reversal of 22143243 is 34234122.

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

It is not a de Polignac number, because 22143243 - 2⁶ = 22143179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22143223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1848 + ... + 6906.

It is an arithmetic number, because the mean of its divisors is an integer number (3693800).

Almost surely, 2^22143243 is an apocalyptic number.

22143243 is a deficient number, since it is larger than the sum of its proper divisors (7407157).

22143243 is a wasteful number, since it uses less digits than its factorization.

22143243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6521.

The product of its digits is 1152, while the sum is 21.

The square root of 22143243 is about 4705.6607400024. The cubic root of 22143243 is about 280.8107581247.

Adding to 22143243 its reverse (34234122), we get a palindrome (56377365).

The spelling of 22143243 in words is "twenty-two million, one hundred forty-three thousand, two hundred forty-three".