Base | Representation |
---|---|
bin | 111111100110010011… |
… | …101100001111101000 |
3 | 20112021010201201201010 |
4 | 333212103230033220 |
5 | 2104323314243310 |
6 | 51212110023520 |
7 | 4635152041542 |
oct | 774623541750 |
9 | 215233651633 |
10 | 68288431080 |
11 | 26a63048001 |
12 | 112997a7ba0 |
13 | 659397a38c |
14 | 343b59c692 |
15 | 1b9a224320 |
hex | fe64ec3e8 |
68288431080 has 256 divisors, whose sum is σ = 212599987200. Its totient is φ = 17539891200.
The previous prime is 68288431051. The next prime is 68288431117. The reversal of 68288431080 is 8013488286.
It is a super-3 number, since 3×682884310803 (a number of 33 digits) contains 333 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69895552 + ... + 69896528.
It is an arithmetic number, because the mean of its divisors is an integer number (830468700).
Almost surely, 268288431080 is an apocalyptic number.
68288431080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 68288431080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106299993600).
68288431080 is an abundant number, since it is smaller than the sum of its proper divisors (144311556120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68288431080 is a wasteful number, since it uses less digits than its factorization.
68288431080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1244 (or 1240 counting only the distinct ones).
The product of its (nonzero) digits is 589824, while the sum is 48.
The spelling of 68288431080 in words is "sixty-eight billion, two hundred eighty-eight million, four hundred thirty-one thousand, eighty".
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