22145783 has 6 divisors (see below), whose sum is σ = 24342192. Its totient is φ = 20132420.

The previous prime is 22145777. The next prime is 22145807. The reversal of 22145783 is 38754122.

It is not a de Polignac number, because 22145783 - 2¹⁸ = 21883639 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 (22145723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91391 + ... + 91632.

It is an arithmetic number, because the mean of its divisors is an integer number (4057032).

Almost surely, 2^22145783 is an apocalyptic number.

22145783 is a deficient number, since it is larger than the sum of its proper divisors (2196409).

22145783 is a wasteful number, since it uses less digits than its factorization.

22145783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183045 (or 183034 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 22145783 is about 4705.9306199731. The cubic root of 22145783 is about 280.8214947642.

It can be divided in two parts, 2214 and 5783, that added together give a palindrome (7997).

The spelling of 22145783 in words is "twenty-two million, one hundred forty-five thousand, seven hundred eighty-three".