Base | Representation |
---|---|
bin | 101110010001… |
… | …011011011000 |
3 | 211211021020120 |
4 | 232101123120 |
5 | 11101130013 |
6 | 1111553240 |
7 | 205050312 |
oct | 56213330 |
9 | 24737216 |
10 | 12130008 |
11 | 6935500 |
12 | 408b820 |
13 | 2689227 |
14 | 187a7b2 |
15 | 10e9123 |
hex | b916d8 |
12130008 has 48 divisors (see below), whose sum is σ = 33340440. Its totient is φ = 3674880.
The previous prime is 12130007. The next prime is 12130049. The reversal of 12130008 is 80003121.
It is a happy number.
12130008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12130003) 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, 816 + ... + 4992.
Almost surely, 212130008 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12130008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16670220).
12130008 is an abundant number, since it is smaller than the sum of its proper divisors (21210432).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12130008 is a wasteful number, since it uses less digits than its factorization.
12130008 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4208 (or 4193 counting only the distinct ones).
The product of its (nonzero) digits is 48, while the sum is 15.
The square root of 12130008 is about 3482.8161019497. The cubic root of 12130008 is about 229.7666694829.
Adding to 12130008 its reverse (80003121), we get a palindrome (92133129).
The spelling of 12130008 in words is "twelve million, one hundred thirty thousand, eight".
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