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228081105 = 32573123357
BaseRepresentation
bin11011001100000…
…11110111010001
3120220011201110100
431212003313101
5431342043410
634344323013
75436441330
oct1546036721
9526151410
10228081105
1110782278a
1264473469
1338339a45
1422411d17
15150548c0
hexd983dd1

228081105 has 48 divisors (see below), whose sum is σ = 466412544. Its totient is φ = 100897920.

The previous prime is 228081097. The next prime is 228081151. The reversal of 228081105 is 501180822.

It is not a de Polignac number, because 228081105 - 23 = 228081097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1914 + ... + 21443.

It is an arithmetic number, because the mean of its divisors is an integer number (9716928).

Almost surely, 2228081105 is an apocalyptic number.

It is an amenable number.

228081105 is an abundant number, since it is smaller than the sum of its proper divisors (238331439).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228081105 is a wasteful number, since it uses less digits than its factorization.

228081105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23406 (or 23403 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 228081105 is about 15102.3542866667. The cubic root of 228081105 is about 610.9839044014.

The spelling of 228081105 in words is "two hundred twenty-eight million, eighty-one thousand, one hundred five".

Divisors: 1 3 5 7 9 15 21 31 35 45 63 93 105 155 217 279 315 465 651 1085 1395 1953 3255 9765 23357 70071 116785 163499 210213 350355 490497 724067 817495 1051065 1471491 2172201 2452485 3620335 5068469 6516603 7357455 10861005 15205407 25342345 32583015 45616221 76027035 228081105