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228367 = 239929
BaseRepresentation
bin110111110000001111
3102121021001
4313300033
524301432
64521131
71640536
oct676017
9377231
10228367
11146637
12b01a7
137cc39
145d31d
15479e7
hex37c0f

228367 has 4 divisors (see below), whose sum is σ = 238320. Its totient is φ = 218416.

The previous prime is 228359. The next prime is 228383. The reversal of 228367 is 763822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 763822 = 2381911.

It is a cyclic number.

It is not a de Polignac number, because 228367 - 23 = 228359 is a prime.

It is a Duffinian number.

228367 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228307) 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, 4942 + ... + 4987.

It is an arithmetic number, because the mean of its divisors is an integer number (59580).

2228367 is an apocalyptic number.

228367 is a deficient number, since it is larger than the sum of its proper divisors (9953).

228367 is an equidigital number, since it uses as much as digits as its factorization.

228367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9952.

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

The square root of 228367 is about 477.8775993913. The cubic root of 228367 is about 61.1239083086.

It can be divided in two parts, 228 and 367, that added together give a palindrome (595).

The spelling of 228367 in words is "two hundred twenty-eight thousand, three hundred sixty-seven".

Divisors: 1 23 9929 228367