Base | Representation |
---|---|
bin | 110001001111… |
… | …010101011101 |
3 | 220021210021020 |
4 | 301033111131 |
5 | 11301022434 |
6 | 1140354353 |
7 | 214500162 |
oct | 61172535 |
9 | 26253236 |
10 | 12907869 |
11 | 7316967 |
12 | 43a59b9 |
13 | 289c2c0 |
14 | 1a00069 |
15 | 11ee849 |
hex | c4f55d |
12907869 has 24 divisors (see below), whose sum is σ = 19081440. Its totient is φ = 7715232.
The previous prime is 12907847. The next prime is 12907883. The reversal of 12907869 is 96870921.
It is not a de Polignac number, because 12907869 - 25 = 12907837 is a prime.
It is a super-2 number, since 2×129078692 = 333226164242322, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 12907869.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12907819) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72022 + ... + 72200.
It is an arithmetic number, because the mean of its divisors is an integer number (795060).
Almost surely, 212907869 is an apocalyptic number.
It is an amenable number.
12907869 is a deficient number, since it is larger than the sum of its proper divisors (6173571).
12907869 is a wasteful number, since it uses less digits than its factorization.
12907869 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 281 (or 238 counting only the distinct ones).
The product of its (nonzero) digits is 54432, while the sum is 42.
The square root of 12907869 is about 3592.7522875923. The cubic root of 12907869 is about 234.5766877598.
The spelling of 12907869 in words is "twelve million, nine hundred seven thousand, eight hundred sixty-nine".
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