22228469 has 4 divisors (see below), whose sum is σ = 23536044. Its totient is φ = 20920896.

The previous prime is 22228447. The next prime is 22228477. The reversal of 22228469 is 96482222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6916900 + 15311569 = 2630^2 + 3913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22228469 is a prime.

It is a super-2 number, since 2×22228469² = 988209668167922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22228489) 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, 653762 + ... + 653795.

It is an arithmetic number, because the mean of its divisors is an integer number (5884011).

Almost surely, 2^22228469 is an apocalyptic number.

It is an amenable number.

22228469 is a deficient number, since it is larger than the sum of its proper divisors (1307575).

22228469 is a wasteful number, since it uses less digits than its factorization.

22228469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307574.

The product of its digits is 27648, while the sum is 35.

The square root of 22228469 is about 4714.7077321930. The cubic root of 22228469 is about 281.1705629813.

The spelling of 22228469 in words is "twenty-two million, two hundred twenty-eight thousand, four hundred sixty-nine".