Base | Representation |
---|---|
bin | 110001000111… |
… | …100001010100 |
3 | 220020011100201 |
4 | 301013201110 |
5 | 11244011420 |
6 | 1135550244 |
7 | 214304644 |
oct | 61074124 |
9 | 26204321 |
10 | 12875860 |
11 | 72a4908 |
12 | 438b384 |
13 | 288a86a |
14 | 19d2524 |
15 | 11e510a |
hex | c47854 |
12875860 has 36 divisors (see below), whose sum is σ = 28289268. Its totient is φ = 4922368.
The previous prime is 12875857. The next prime is 12875869. The reversal of 12875860 is 6857821.
It can be written as a sum of positive squares in 2 ways, for example, as 4477456 + 8398404 = 2116^2 + 2898^2 .
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12875869) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9972 + ... + 11188.
It is an arithmetic number, because the mean of its divisors is an integer number (785813).
Almost surely, 212875860 is an apocalyptic number.
12875860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12875860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14144634).
12875860 is an abundant number, since it is smaller than the sum of its proper divisors (15413408).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12875860 is a wasteful number, since it uses less digits than its factorization.
12875860 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1272 (or 1247 counting only the distinct ones).
The product of its (nonzero) digits is 26880, while the sum is 37.
The square root of 12875860 is about 3588.2948596792. The cubic root of 12875860 is about 234.3826257667.
The spelling of 12875860 in words is "twelve million, eight hundred seventy-five thousand, eight hundred sixty".
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