228286 has 4 divisors (see below), whose sum is σ = 342432. Its totient is φ = 114142.

The previous prime is 228281. The next prime is 228299. The reversal of 228286 is 682822.

It is a happy number.

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

It is a super-2 number, since 2×228286² = 104228995592, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57070 + ... + 57073.

It is an arithmetic number, because the mean of its divisors is an integer number (85608).

2²²⁸²⁸⁶ is an apocalyptic number.

228286 is a deficient number, since it is larger than the sum of its proper divisors (114146).

228286 is a wasteful number, since it uses less digits than its factorization.

228286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114145.

The product of its digits is 3072, while the sum is 28.

The square root of 228286 is about 477.7928421398. The cubic root of 228286 is about 61.1166807290.

The spelling of 228286 in words is "two hundred twenty-eight thousand, two hundred eighty-six".