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228227 = 241947
BaseRepresentation
bin110111101110000011
3102121001212
4313232003
524300402
64520335
71640246
oct675603
9377055
10228227
1114651a
12b00ab
137cb5c
145d25d
1547952
hex37b83

228227 has 4 divisors (see below), whose sum is σ = 229416. Its totient is φ = 227040.

The previous prime is 228223. The next prime is 228233. The reversal of 228227 is 722822.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 722822 = 2361411.

It is a cyclic number.

It is not a de Polignac number, because 228227 - 22 = 228223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228223) by changing a digit.

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, 233 + ... + 714.

It is an arithmetic number, because the mean of its divisors is an integer number (57354).

2228227 is an apocalyptic number.

228227 is a deficient number, since it is larger than the sum of its proper divisors (1189).

228227 is an equidigital number, since it uses as much as digits as its factorization.

228227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188.

The product of its digits is 896, while the sum is 23.

The square root of 228227 is about 477.7310959107. The cubic root of 228227 is about 61.1114151194. Note that the first 3 decimals are identical.

The spelling of 228227 in words is "two hundred twenty-eight thousand, two hundred twenty-seven".

Divisors: 1 241 947 228227