Base | Representation |
---|---|
bin | 110000100000… |
… | …011000111100 |
3 | 212221000111102 |
4 | 300200120330 |
5 | 11223344310 |
6 | 1132312232 |
7 | 213036443 |
oct | 60403074 |
9 | 25830442 |
10 | 12715580 |
11 | 71a5449 |
12 | 4312678 |
13 | 2832917 |
14 | 198dd5a |
15 | 11b28a5 |
hex | c2063c |
12715580 has 24 divisors (see below), whose sum is σ = 27565440. Its totient is φ = 4921920.
The previous prime is 12715561. The next prime is 12715583. The reversal of 12715580 is 8551721.
It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12715583) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9635 + ... + 10874.
It is an arithmetic number, because the mean of its divisors is an integer number (1148560).
Almost surely, 212715580 is an apocalyptic number.
12715580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12715580 is an abundant number, since it is smaller than the sum of its proper divisors (14849860).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12715580 is a wasteful number, since it uses less digits than its factorization.
12715580 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 20549 (or 20547 counting only the distinct ones).
The product of its (nonzero) digits is 2800, while the sum is 29.
The square root of 12715580 is about 3565.8911929558. The cubic root of 12715580 is about 233.4060227045.
The spelling of 12715580 in words is "twelve million, seven hundred fifteen thousand, five hundred eighty".
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