22770143 has 12 divisors (see below), whose sum is σ = 25168920. Its totient is φ = 20584080.

The previous prime is 22770131. The next prime is 22770169. The reversal of 22770143 is 34107722.

It is a de Polignac number, because none of the positive numbers 2^k-22770143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22770193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27053 + ... + 27881.

It is an arithmetic number, because the mean of its divisors is an integer number (2097410).

Almost surely, 2^22770143 is an apocalyptic number.

22770143 is a deficient number, since it is larger than the sum of its proper divisors (2398777).

22770143 is a wasteful number, since it uses less digits than its factorization.

22770143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 22770143 is about 4771.8071000408. The cubic root of 22770143 is about 283.4361581425.

Adding to 22770143 its reverse (34107722), we get a palindrome (56877865).

The spelling of 22770143 in words is "twenty-two million, seven hundred seventy thousand, one hundred forty-three".