228422 has 8 divisors (see below), whose sum is σ = 345072. Its totient is φ = 113400.

The previous prime is 228421. The next prime is 228427. The reversal of 228422 is 224822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×228422² = 104353220168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228394 and 228403.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 228422.

It is not an unprimeable number, because it can be changed into a prime (228421) 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, 47 + ... + 677.

It is an arithmetic number, because the mean of its divisors is an integer number (43134).

2²²⁸⁴²² is an apocalyptic number.

228422 is a deficient number, since it is larger than the sum of its proper divisors (116650).

228422 is a wasteful number, since it uses less digits than its factorization.

228422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814.

The product of its digits is 512, while the sum is 20.

The square root of 228422 is about 477.9351420434. The cubic root of 228422 is about 61.1288149503.

Subtracting from 228422 its reverse (224822), we obtain a square (3600 = 60²).

The spelling of 228422 in words is "two hundred twenty-eight thousand, four hundred twenty-two".