222638 has 8 divisors (see below), whose sum is σ = 359688. Its totient is φ = 102744.

The previous prime is 222619. The next prime is 222643. The reversal of 222638 is 836222.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4256 + ... + 4307.

It is an arithmetic number, because the mean of its divisors is an integer number (44961).

2²²²⁶³⁸ is an apocalyptic number.

222638 is a deficient number, since it is larger than the sum of its proper divisors (137050).

222638 is a wasteful number, since it uses less digits than its factorization.

222638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8578.

The product of its digits is 1152, while the sum is 23.

The square root of 222638 is about 471.8453136357. The cubic root of 222638 is about 60.6084388107.

The spelling of 222638 in words is "two hundred twenty-two thousand, six hundred thirty-eight".