22047 has 4 divisors (see below), whose sum is σ = 29400. Its totient is φ = 14696.

The previous prime is 22039. The next prime is 22051. The reversal of 22047 is 74022.

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 22047 - 2³ = 22039 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3672 + ... + 3677.

It is an arithmetic number, because the mean of its divisors is an integer number (7350).

2²²⁰⁴⁷ is an apocalyptic number.

22047 is a deficient number, since it is larger than the sum of its proper divisors (7353).

22047 is an equidigital number, since it uses as much as digits as its factorization.

22047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7352.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 22047 is about 148.4823221801. The cubic root of 22047 is about 28.0403330302.

Adding to 22047 its reverse (74022), we get a palindrome (96069).

It can be divided in two parts, 2204 and 7, that added together give a triangular number (2211 = T₆₆).

The spelling of 22047 in words is "twenty-two thousand, forty-seven", and thus it is an iban number.