Base | Representation |
---|---|
bin | 110000110110… |
… | …111110001000 |
3 | 220002201101001 |
4 | 300312332020 |
5 | 11234324242 |
6 | 1134304344 |
7 | 213603214 |
oct | 60667610 |
9 | 26081331 |
10 | 12808072 |
11 | 7258992 |
12 | 43580b4 |
13 | 2865a54 |
14 | 19b5944 |
15 | 11ceeb7 |
hex | c36f88 |
12808072 has 32 divisors (see below), whose sum is σ = 26059320. Its totient is φ = 5877760.
The previous prime is 12808063. The next prime is 12808091. The reversal of 12808072 is 27080821.
12808072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 4 ways, for example, as 9400356 + 3407716 = 3066^2 + 1846^2 .
It is a self number, because there is not a number n which added to its sum of digits gives 12808072.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4428 + ... + 6724.
Almost surely, 212808072 is an apocalyptic number.
It is an amenable number.
12808072 is an abundant number, since it is smaller than the sum of its proper divisors (13251248).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12808072 is a wasteful number, since it uses less digits than its factorization.
12808072 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2361 (or 2357 counting only the distinct ones).
The product of its (nonzero) digits is 1792, while the sum is 28.
The square root of 12808072 is about 3578.8366824989. The cubic root of 12808072 is about 233.9705809559.
Adding to 12808072 its reverse (27080821), we get a palindrome (39888893).
The spelling of 12808072 in words is "twelve million, eight hundred eight thousand, seventy-two".
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