Base | Representation |
---|---|
bin | 110001001101… |
… | …111000000101 |
3 | 220021111001220 |
4 | 301031320011 |
5 | 11300330033 |
6 | 1140310553 |
7 | 214443564 |
oct | 61157005 |
9 | 26244056 |
10 | 12901893 |
11 | 7312424 |
12 | 43a2459 |
13 | 2899674 |
14 | 19dbbdb |
15 | 11ecbb3 |
hex | c4de05 |
12901893 has 16 divisors (see below), whose sum is σ = 18240000. Its totient is φ = 8089200.
The previous prime is 12901879. The next prime is 12901913. The reversal of 12901893 is 39810921.
12901893 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 12901893 - 29 = 12901381 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12901813) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7858 + ... + 9356.
It is an arithmetic number, because the mean of its divisors is an integer number (1140000).
Almost surely, 212901893 is an apocalyptic number.
It is an amenable number.
12901893 is a deficient number, since it is larger than the sum of its proper divisors (5338107).
12901893 is a wasteful number, since it uses less digits than its factorization.
12901893 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1672.
The product of its (nonzero) digits is 3888, while the sum is 33.
The square root of 12901893 is about 3591.9205169380. The cubic root of 12901893 is about 234.5404812495.
The spelling of 12901893 in words is "twelve million, nine hundred one thousand, eight hundred ninety-three".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •