Base | Representation |
---|---|
bin | 110101100000… |
… | …1101001111100 |
3 | 1221210101212002 |
4 | 1223001221330 |
5 | 24140244223 |
6 | 2441201432 |
7 | 460321316 |
oct | 153015174 |
9 | 57711762 |
10 | 28056188 |
11 | 14923036 |
12 | 9490278 |
13 | 5a742c4 |
14 | 3a247b6 |
15 | 26e2e28 |
hex | 1ac1a7c |
28056188 has 12 divisors (see below), whose sum is σ = 51986592. Its totient is φ = 13202880.
The previous prime is 28056187. The next prime is 28056191. The reversal of 28056188 is 88165082.
It is a super-3 number, since 3×280561883 (a number of 23 digits) contains 333 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28056187) 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 3 ways as a sum of consecutive naturals, for example, 206228 + ... + 206363.
It is an arithmetic number, because the mean of its divisors is an integer number (4332216).
Almost surely, 228056188 is an apocalyptic number.
It is an amenable number.
28056188 is a deficient number, since it is larger than the sum of its proper divisors (23930404).
28056188 is a wasteful number, since it uses less digits than its factorization.
28056188 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 412612 (or 412610 counting only the distinct ones).
The product of its (nonzero) digits is 30720, while the sum is 38.
The square root of 28056188 is about 5296.8092282052. The cubic root of 28056188 is about 303.8618803540.
The spelling of 28056188 in words is "twenty-eight million, fifty-six thousand, one hundred eighty-eight".
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