Base | Representation |
---|---|
bin | 100011111111… |
… | …0101001110000 |
3 | 1022111122012020 |
4 | 1013332221300 |
5 | 14312300343 |
6 | 1512231440 |
7 | 316245135 |
oct | 107765160 |
9 | 38448166 |
10 | 18868848 |
11 | a718499 |
12 | 639b580 |
13 | 3ba85cb |
14 | 271258c |
15 | 19cab83 |
hex | 11fea70 |
18868848 has 40 divisors (see below), whose sum is σ = 49670928. Its totient is φ = 6170112.
The previous prime is 18868831. The next prime is 18868859. The reversal of 18868848 is 84886881.
It is a nude number because it is divisible by every one of its digits.
It is a self number, because there is not a number n which added to its sum of digits gives 18868848.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1165 + ... + 6252.
Almost surely, 218868848 is an apocalyptic number.
It is an amenable number.
18868848 is an abundant number, since it is smaller than the sum of its proper divisors (30802080).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18868848 is a wasteful number, since it uses less digits than its factorization.
18868848 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7481 (or 7475 counting only the distinct ones).
The product of its digits is 786432, while the sum is 51.
The square root of 18868848 is about 4343.8287259053. The cubic root of 18868848 is about 266.2247709128.
The spelling of 18868848 in words is "eighteen million, eight hundred sixty-eight thousand, eight hundred forty-eight".
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