Base | Representation |
---|---|
bin | 110001100010… |
… | …111011101111 |
3 | 220102212101100 |
4 | 301202323233 |
5 | 11311110033 |
6 | 1142214143 |
7 | 215253210 |
oct | 61427357 |
9 | 26385340 |
10 | 12988143 |
11 | 7371203 |
12 | 4424353 |
13 | 28c99bc |
14 | 1a21407 |
15 | 1218513 |
hex | c62eef |
12988143 has 24 divisors (see below), whose sum is σ = 22183200. Its totient is φ = 7164864.
The previous prime is 12988099. The next prime is 12988159. The reversal of 12988143 is 34188921.
12988143 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 12988143 - 217 = 12857071 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 12988098 and 12988107.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12988043) 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, 1728 + ... + 5381.
It is an arithmetic number, because the mean of its divisors is an integer number (924300).
Almost surely, 212988143 is an apocalyptic number.
12988143 is a deficient number, since it is larger than the sum of its proper divisors (9195057).
12988143 is a wasteful number, since it uses less digits than its factorization.
12988143 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7151 (or 7148 counting only the distinct ones).
The product of its digits is 13824, while the sum is 36.
The square root of 12988143 is about 3603.9066303111. The cubic root of 12988143 is about 235.0619604237.
It can be divided in two parts, 12988 and 143, that added together give a palindrome (13131).
The spelling of 12988143 in words is "twelve million, nine hundred eighty-eight thousand, one hundred forty-three".
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