227638 has 4 divisors (see below), whose sum is σ = 341460. Its totient is φ = 113818.

The previous prime is 227629. The next prime is 227651. The reversal of 227638 is 836722.

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

It is a congruent number.

It is an unprimeable number.

227638 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 56908 + ... + 56911.

It is an arithmetic number, because the mean of its divisors is an integer number (85365).

2²²⁷⁶³⁸ is an apocalyptic number.

227638 is a deficient number, since it is larger than the sum of its proper divisors (113822).

227638 is a wasteful number, since it uses less digits than its factorization.

227638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113821.

The product of its digits is 4032, while the sum is 28.

The square root of 227638 is about 477.1142420846. The cubic root of 227638 is about 61.0587984519.

The spelling of 227638 in words is "two hundred twenty-seven thousand, six hundred thirty-eight".