Base | Representation |
---|---|
bin | 11010101011010… |
… | …11110010001000 |
3 | 120121002121122200 |
4 | 31111223302020 |
5 | 424242210133 |
6 | 34112320200 |
7 | 5355111432 |
oct | 1525536210 |
9 | 517077580 |
10 | 223788168 |
11 | 1053603aa |
12 | 62b43060 |
13 | 37495a46 |
14 | 21a15652 |
15 | 149a7913 |
hex | d56bc88 |
223788168 has 108 divisors (see below), whose sum is σ = 636019605. Its totient is φ = 71084160.
The previous prime is 223788139. The next prime is 223788179. The reversal of 223788168 is 861887322.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
223788168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 2 ways, for example, as 159820164 + 63968004 = 12642^2 + 7998^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=10578.
It is a super-2 number, since 2×2237881682 = 100162288273592448, which contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5204355 + ... + 5204397.
Almost surely, 2223788168 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 223788168
223788168 is an abundant number, since it is smaller than the sum of its proper divisors (412231437).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
223788168 is a wasteful number, since it uses less digits than its factorization.
223788168 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 180 (or 89 counting only the distinct ones).
The product of its digits is 258048, while the sum is 45.
The square root of 223788168 is about 14959.5510627826. The cubic root of 223788168 is about 607.1262915210.
The spelling of 223788168 in words is "two hundred twenty-three million, seven hundred eighty-eight thousand, one hundred sixty-eight".
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