Base | Representation |
---|---|
bin | 1000001101011… |
… | …01101011111100 |
3 | 11210120220022112 |
4 | 10012231223330 |
5 | 120112300420 |
6 | 10500033152 |
7 | 1464242564 |
oct | 406555374 |
9 | 153526275 |
10 | 68868860 |
11 | 35969215 |
12 | 1b0927b8 |
13 | 11363a08 |
14 | 9209da4 |
15 | 60a58c5 |
hex | 41adafc |
68868860 has 12 divisors (see below), whose sum is σ = 144624648. Its totient is φ = 27547536.
The previous prime is 68868859. The next prime is 68868869. The reversal of 68868860 is 6886886.
It is a junction number, because it is equal to n+sod(n) for n = 68868799 and 68868808.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68868869) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1721702 + ... + 1721741.
It is an arithmetic number, because the mean of its divisors is an integer number (12052054).
Almost surely, 268868860 is an apocalyptic number.
It is an amenable number.
68868860 is an abundant number, since it is smaller than the sum of its proper divisors (75755788).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68868860 is a wasteful number, since it uses less digits than its factorization.
68868860 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3443452 (or 3443450 counting only the distinct ones).
The product of its (nonzero) digits is 884736, while the sum is 50.
The square root of 68868860 is about 8298.7264083111. The cubic root of 68868860 is about 409.8965830779.
The spelling of 68868860 in words is "sixty-eight million, eight hundred sixty-eight thousand, eight hundred sixty".
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