222628 has 12 divisors (see below), whose sum is σ = 445312. Its totient is φ = 95400.

The previous prime is 222619. The next prime is 222643. The reversal of 222628 is 826222.

222628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

222628 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 222599 and 222608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3948 + ... + 4003.

2²²²⁶²⁸ is an apocalyptic number.

222628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

222628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222628 is a wasteful number, since it uses less digits than its factorization.

222628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7962 (or 7960 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 222628 is about 471.8347168236. The cubic root of 222628 is about 60.6075313683.

The spelling of 222628 in words is "two hundred twenty-two thousand, six hundred twenty-eight".