Base | Representation |
---|---|
bin | 110101100011… |
… | …0110010001101 |
3 | 1221211110200012 |
4 | 1223012302031 |
5 | 24141432242 |
6 | 2441443005 |
7 | 460436501 |
oct | 153066215 |
9 | 57743605 |
10 | 28077197 |
11 | 149378a5 |
12 | 94a0465 |
13 | 5a80a35 |
14 | 3a2c301 |
15 | 26e9282 |
hex | 1ac6c8d |
28077197 has 2 divisors, whose sum is σ = 28077198. Its totient is φ = 28077196.
The previous prime is 28077173. The next prime is 28077229. The reversal of 28077197 is 79177082.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 15217801 + 12859396 = 3901^2 + 3586^2 .
It is a cyclic number.
It is not a de Polignac number, because 28077197 - 222 = 23882893 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (28074197) 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 as a sum of consecutive naturals, namely, 14038598 + 14038599.
It is an arithmetic number, because the mean of its divisors is an integer number (14038599).
Almost surely, 228077197 is an apocalyptic number.
It is an amenable number.
28077197 is a deficient number, since it is larger than the sum of its proper divisors (1).
28077197 is an equidigital number, since it uses as much as digits as its factorization.
28077197 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 49392, while the sum is 41.
The square root of 28077197 is about 5298.7920321522. The cubic root of 28077197 is about 303.9377072561.
It can be divided in two parts, 280 and 77197, that added together give a palindrome (77477).
The spelling of 28077197 in words is "twenty-eight million, seventy-seven thousand, one hundred ninety-seven".
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