Base | Representation |
---|---|
bin | 1000001001101… |
… | …11000010100000 |
3 | 11202200012200021 |
4 | 10010313002200 |
5 | 120001223010 |
6 | 10441403224 |
7 | 1460146666 |
oct | 404670240 |
9 | 152605607 |
10 | 68382880 |
11 | 35667085 |
12 | 1aa99514 |
13 | 11223757 |
14 | 9120c36 |
15 | 600b8da |
hex | 41370a0 |
68382880 has 48 divisors (see below), whose sum is σ = 163991520. Its totient is φ = 26940672.
The previous prime is 68382877. The next prime is 68382889. The reversal of 68382880 is 8828386.
It is not an unprimeable number, because it can be changed into a prime (68382889) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7531 + ... + 13909.
It is an arithmetic number, because the mean of its divisors is an integer number (3416490).
Almost surely, 268382880 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 68382880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81995760).
68382880 is an abundant number, since it is smaller than the sum of its proper divisors (95608640).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68382880 is a wasteful number, since it uses less digits than its factorization.
68382880 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6461 (or 6453 counting only the distinct ones).
The product of its (nonzero) digits is 147456, while the sum is 43.
The square root of 68382880 is about 8269.3941736986. The cubic root of 68382880 is about 408.9301475030.
The spelling of 68382880 in words is "sixty-eight million, three hundred eighty-two thousand, eight hundred eighty".
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