22159143 has 32 divisors (see below), whose sum is σ = 36288000. Its totient is φ = 13292928.

The previous prime is 22159139. The next prime is 22159157. The reversal of 22159143 is 34195122.

It is not a de Polignac number, because 22159143 - 2² = 22159139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22159133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9508 + ... + 11606.

It is an arithmetic number, because the mean of its divisors is an integer number (1134000).

Almost surely, 2^22159143 is an apocalyptic number.

22159143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22159143 is a deficient number, since it is larger than the sum of its proper divisors (14128857).

22159143 is a wasteful number, since it uses less digits than its factorization.

22159143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148 (or 2142 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 22159143 is about 4707.3498913932. The cubic root of 22159143 is about 280.8779542863.

The spelling of 22159143 in words is "twenty-two million, one hundred fifty-nine thousand, one hundred forty-three".