Base | Representation |
---|---|
bin | 100010010101… |
… | …1111101011000 |
3 | 1020212210101021 |
4 | 1010223331120 |
5 | 14102141343 |
6 | 1441532224 |
7 | 306022120 |
oct | 104537530 |
9 | 36783337 |
10 | 18005848 |
11 | a189073 |
12 | 6044074 |
13 | 3965863 |
14 | 2569c80 |
15 | 18aa0ed |
hex | 112bf58 |
18005848 has 32 divisors (see below), whose sum is σ = 39168000. Its totient is φ = 7600032.
The previous prime is 18005843. The next prime is 18005861. The reversal of 18005848 is 84850081.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18005843) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1353 + ... + 6151.
It is an arithmetic number, because the mean of its divisors is an integer number (1224000).
Almost surely, 218005848 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 18005848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19584000).
18005848 is an abundant number, since it is smaller than the sum of its proper divisors (21162152).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18005848 is a wasteful number, since it uses less digits than its factorization.
18005848 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4879 (or 4875 counting only the distinct ones).
The product of its (nonzero) digits is 10240, while the sum is 34.
The square root of 18005848 is about 4243.3298245600. The cubic root of 18005848 is about 262.1025180065.
The spelling of 18005848 in words is "eighteen million, five thousand, eight hundred forty-eight".
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