22690143 has 48 divisors (see below), whose sum is σ = 39137280. Its totient is φ = 12400128.

The previous prime is 22690141. The next prime is 22690163. The reversal of 22690143 is 34109622.

It is not a de Polignac number, because 22690143 - 2¹ = 22690141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22690141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 233871 + ... + 233967.

It is an arithmetic number, because the mean of its divisors is an integer number (815360).

Almost surely, 2^22690143 is an apocalyptic number.

22690143 is a deficient number, since it is larger than the sum of its proper divisors (16447137).

22690143 is a wasteful number, since it uses less digits than its factorization.

22690143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 22690143 is about 4763.4171557822. The cubic root of 22690143 is about 283.1038296818.

Adding to 22690143 its reverse (34109622), we get a palindrome (56799765).

The spelling of 22690143 in words is "twenty-two million, six hundred ninety thousand, one hundred forty-three".