Base | Representation |
---|---|
bin | 10111010001001001… |
… | …00111110011001100 |
3 | 1012020120121200012200 |
4 | 23220210213303030 |
5 | 201040403131113 |
6 | 5423315401500 |
7 | 621362651400 |
oct | 135044476314 |
9 | 35216550180 |
10 | 12491848908 |
11 | 5330360a80 |
12 | 25075b3290 |
13 | 1241024796 |
14 | 867091100 |
15 | 4d1a28873 |
hex | 2e8927ccc |
12491848908 has 432 divisors, whose sum is σ = 43580759040. Its totient is φ = 2971987200.
The previous prime is 12491848907. The next prime is 12491848913. The reversal of 12491848908 is 80984819421.
It is a happy number.
12491848908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not an unprimeable number, because it can be changed into a prime (12491848907) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11428410 + ... + 11429502.
Almost surely, 212491848908 is an apocalyptic number.
12491848908 is a gapful number since it is divisible by the number (18) 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 12491848908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21790379520).
12491848908 is an abundant number, since it is smaller than the sum of its proper divisors (31088910132).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12491848908 is a wasteful number, since it uses less digits than its factorization.
12491848908 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1178 (or 1166 counting only the distinct ones).
The product of its (nonzero) digits is 1327104, while the sum is 54.
The spelling of 12491848908 in words is "twelve billion, four hundred ninety-one million, eight hundred forty-eight thousand, nine hundred eight".
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