Base | Representation |
---|---|
bin | 110001011100… |
… | …001110101001 |
3 | 220101110201020 |
4 | 301130032221 |
5 | 11304220211 |
6 | 1141443053 |
7 | 215110146 |
oct | 61341651 |
9 | 26343636 |
10 | 12960681 |
11 | 7352608 |
12 | 4410489 |
13 | 28ba356 |
14 | 1a153cd |
15 | 1210306 |
hex | c5c3a9 |
12960681 has 16 divisors (see below), whose sum is σ = 18575424. Its totient is φ = 8008704.
The previous prime is 12960677. The next prime is 12960691. The reversal of 12960681 is 18606921.
12960681 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 12960681 - 22 = 12960677 is a prime.
It is a super-2 number, since 2×129606812 = 335958503967522, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (12960691) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1521 + ... + 5313.
It is an arithmetic number, because the mean of its divisors is an integer number (1160964).
Almost surely, 212960681 is an apocalyptic number.
It is an amenable number.
12960681 is a deficient number, since it is larger than the sum of its proper divisors (5614743).
12960681 is a wasteful number, since it uses less digits than its factorization.
12960681 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3880.
The product of its (nonzero) digits is 5184, while the sum is 33.
The square root of 12960681 is about 3600.0945820909. The cubic root of 12960681 is about 234.8961726340.
The spelling of 12960681 in words is "twelve million, nine hundred sixty thousand, six hundred eighty-one".
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