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228943 = 11131601
BaseRepresentation
bin110111111001001111
3102122001101
4313321033
524311233
64523531
71642321
oct677117
9378041
10228943
11147010
12b05a7
1380290
145d611
1547c7d
hex37e4f

228943 has 8 divisors (see below), whose sum is σ = 269136. Its totient is φ = 192000.

The previous prime is 228929. The next prime is 228953. The reversal of 228943 is 349822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228943 - 25 = 228911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228913) 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 in 7 ways as a sum of consecutive naturals, for example, 658 + ... + 943.

It is an arithmetic number, because the mean of its divisors is an integer number (33642).

2228943 is an apocalyptic number.

228943 is a deficient number, since it is larger than the sum of its proper divisors (40193).

228943 is a wasteful number, since it uses less digits than its factorization.

228943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625.

The product of its digits is 3456, while the sum is 28.

The square root of 228943 is about 478.4798846347. The cubic root of 228943 is about 61.1752552078.

It can be divided in two parts, 2289 and 43, that added together give a palindrome (2332).

The spelling of 228943 in words is "two hundred twenty-eight thousand, nine hundred forty-three".

Divisors: 1 11 13 143 1601 17611 20813 228943