Base | Representation |
---|---|
bin | 110001001010… |
… | …111111111011 |
3 | 220020212220101 |
4 | 301022333323 |
5 | 11244440412 |
6 | 1140140231 |
7 | 214364326 |
oct | 61127773 |
9 | 26225811 |
10 | 12890107 |
11 | 730458a |
12 | 4397677 |
13 | 28941a9 |
14 | 19d77bd |
15 | 11e9457 |
hex | c4affb |
12890107 has 2 divisors, whose sum is σ = 12890108. Its totient is φ = 12890106.
The previous prime is 12890099. The next prime is 12890117. The reversal of 12890107 is 70109821.
It is a weak prime.
It is an emirp because it is prime and its reverse (70109821) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 12890107 - 23 = 12890099 is a prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (12890117) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6445053 + 6445054.
It is an arithmetic number, because the mean of its divisors is an integer number (6445054).
Almost surely, 212890107 is an apocalyptic number.
12890107 is a deficient number, since it is larger than the sum of its proper divisors (1).
12890107 is an equidigital number, since it uses as much as digits as its factorization.
12890107 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1008, while the sum is 28.
The square root of 12890107 is about 3590.2795155809. The cubic root of 12890107 is about 234.4690411831.
Adding to 12890107 its reverse (70109821), we get a palindrome (82999928).
The spelling of 12890107 in words is "twelve million, eight hundred ninety thousand, one hundred seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.078 sec. • engine limits •