228986 has 4 divisors (see below), whose sum is σ = 343482. Its totient is φ = 114492.

The previous prime is 228983. The next prime is 228989. The reversal of 228986 is 689822.

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

It is an interprime number because it is at equal distance from previous prime (228983) and next prime (228989).

It can be written as a sum of positive squares in only one way, i.e., 219961 + 9025 = 469^2 + 95^2 .

It is not an unprimeable number, because it can be changed into a prime (228983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57245 + ... + 57248.

2²²⁸⁹⁸⁶ is an apocalyptic number.

228986 is a deficient number, since it is larger than the sum of its proper divisors (114496).

228986 is a wasteful number, since it uses less digits than its factorization.

228986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114495.

The product of its digits is 13824, while the sum is 35.

The square root of 228986 is about 478.5248164934. The cubic root of 228986 is about 61.1790849402.

The spelling of 228986 in words is "two hundred twenty-eight thousand, nine hundred eighty-six".