Base | Representation |
---|---|
bin | 11001111111101… |
… | …11010001100100 |
3 | 120012100000011010 |
4 | 30333313101210 |
5 | 421311134233 |
6 | 33345542220 |
7 | 5255355651 |
oct | 1477672144 |
9 | 505300133 |
10 | 218068068 |
11 | 102103849 |
12 | 61044970 |
13 | 3624227a |
14 | 20d66c28 |
15 | 14227b63 |
hex | cff7464 |
218068068 has 24 divisors (see below), whose sum is σ = 509068672. Its totient is φ = 72654624.
The previous prime is 218068031. The next prime is 218068069. The reversal of 218068068 is 860860812.
It is not an unprimeable number, because it can be changed into a prime (218068069) 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 7 ways as a sum of consecutive naturals, for example, 39621 + ... + 44787.
Almost surely, 2218068068 is an apocalyptic number.
It is an amenable number.
218068068 is an abundant number, since it is smaller than the sum of its proper divisors (291000604).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
218068068 is a wasteful number, since it uses less digits than its factorization.
218068068 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8691 (or 8689 counting only the distinct ones).
The product of its (nonzero) digits is 36864, while the sum is 39.
The square root of 218068068 is about 14767.1279536679. The cubic root of 218068068 is about 601.9087988167.
The spelling of 218068068 in words is "two hundred eighteen million, sixty-eight thousand, sixty-eight".
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