22528143 has 36 divisors (see below), whose sum is σ = 36267504. Its totient is φ = 13464000.

The previous prime is 22528123. The next prime is 22528169. The reversal of 22528143 is 34182522.

It is not a de Polignac number, because 22528143 - 2¹⁰ = 22527119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22528123) 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 35 ways as a sum of consecutive naturals, for example, 149118 + ... + 149268.

Almost surely, 2^22528143 is an apocalyptic number.

22528143 is a deficient number, since it is larger than the sum of its proper divisors (13739361).

22528143 is a wasteful number, since it uses less digits than its factorization.

22528143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 302 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 22528143 is about 4746.3820958705. The cubic root of 22528143 is about 282.4284644098.

The spelling of 22528143 in words is "twenty-two million, five hundred twenty-eight thousand, one hundred forty-three".