22803643 has 4 divisors (see below), whose sum is σ = 22827168. Its totient is φ = 22780120.

The previous prime is 22803637. The next prime is 22803659. The reversal of 22803643 is 34630822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22803643 - 2⁵ = 22803611 is a prime.

It is a super-2 number, since 2×22803643² = 1040012268142898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22803623) 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 3 ways as a sum of consecutive naturals, for example, 10243 + ... + 12268.

It is an arithmetic number, because the mean of its divisors is an integer number (5706792).

Almost surely, 2^22803643 is an apocalyptic number.

22803643 is a deficient number, since it is larger than the sum of its proper divisors (23525).

22803643 is a wasteful number, since it uses less digits than its factorization.

22803643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23524.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 22803643 is about 4775.3160104856. The cubic root of 22803643 is about 283.5750894705.

The spelling of 22803643 in words is "twenty-two million, eight hundred three thousand, six hundred forty-three".