Base | Representation |
---|---|
bin | 1000000111111… |
… | …11001010011000 |
3 | 11202020120201112 |
4 | 10003333022120 |
5 | 114421412013 |
6 | 10432435452 |
7 | 1455204506 |
oct | 403771230 |
9 | 152216645 |
10 | 68154008 |
11 | 3552012a |
12 | 1a9a8b88 |
13 | 11173520 |
14 | 90a1676 |
15 | 5eb3ba8 |
hex | 40ff298 |
68154008 has 32 divisors (see below), whose sum is σ = 139686960. Its totient is φ = 30983040.
The previous prime is 68153993. The next prime is 68154017. The reversal of 68154008 is 80045186.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2078 + ... + 11858.
Almost surely, 268154008 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 68154008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69843480).
68154008 is an abundant number, since it is smaller than the sum of its proper divisors (71532952).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68154008 is a wasteful number, since it uses less digits than its factorization.
68154008 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9867 (or 9863 counting only the distinct ones).
The product of its (nonzero) digits is 7680, while the sum is 32.
The square root of 68154008 is about 8255.5440765585. The cubic root of 68154008 is about 408.4734188062.
The spelling of 68154008 in words is "sixty-eight million, one hundred fifty-four thousand, eight".
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