Base | Representation |
---|---|
bin | 1000000110111… |
… | …10001001110010 |
3 | 11201222201020220 |
4 | 10003132021302 |
5 | 114403100202 |
6 | 10425513510 |
7 | 1454102355 |
oct | 403361162 |
9 | 151881226 |
10 | 68018802 |
11 | 35438595 |
12 | 1a942896 |
13 | 11126b17 |
14 | 906829c |
15 | 5e88abc |
hex | 40de272 |
68018802 has 64 divisors (see below), whose sum is σ = 150698880. Its totient is φ = 20376576.
The previous prime is 68018779. The next prime is 68018809. The reversal of 68018802 is 20881086.
It is not an unprimeable number, because it can be changed into a prime (68018809) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252724 + ... + 252992.
It is an arithmetic number, because the mean of its divisors is an integer number (2354670).
Almost surely, 268018802 is an apocalyptic number.
68018802 is an abundant number, since it is smaller than the sum of its proper divisors (82680078).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68018802 is a wasteful number, since it uses less digits than its factorization.
68018802 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 395.
The product of its (nonzero) digits is 6144, while the sum is 33.
The square root of 68018802 is about 8247.3512111465. The cubic root of 68018802 is about 408.2031259795.
Adding to 68018802 its reverse (20881086), we get a palindrome (88899888).
The spelling of 68018802 in words is "sixty-eight million, eighteen thousand, eight hundred two".
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