Base | Representation |
---|---|
bin | 110110111110… |
… | …1101000110001 |
3 | 2000020112001121 |
4 | 1231331220301 |
5 | 24334414121 |
6 | 2505502241 |
7 | 500006200 |
oct | 155755061 |
9 | 60215047 |
10 | 28826161 |
11 | 152a9581 |
12 | 97a1981 |
13 | 5c83900 |
14 | 3b85237 |
15 | 27e6141 |
hex | 1b7da31 |
28826161 has 27 divisors (see below), whose sum is σ = 36936171. Its totient is φ = 22420944.
The previous prime is 28826159. The next prime is 28826177. The reversal of 28826161 is 16162882.
The square root of 28826161 is 5369.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 4264225 + 24561936 = 2065^2 + 4956^2 .
It is not a de Polignac number, because 28826161 - 21 = 28826159 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (28826141) by changing a digit.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 488550 + ... + 488608.
Almost surely, 228826161 is an apocalyptic number.
28826161 is the 5369-th square number.
28826161 is the 2685-th centered octagonal number.
It is an amenable number.
28826161 is a deficient number, since it is larger than the sum of its proper divisors (8110010).
28826161 is an equidigital number, since it uses as much as digits as its factorization.
28826161 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 158 (or 79 counting only the distinct ones).
The product of its digits is 9216, while the sum is 34.
The cubic root of 28826161 is about 306.6165570036.
Multiplying 28826161 by its product of digits (9216), we get a square (265661899776 = 5154242).
The spelling of 28826161 in words is "twenty-eight million, eight hundred twenty-six thousand, one hundred sixty-one".
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