Base | Representation |
---|---|
bin | 1000000111100… |
… | …11101001001110 |
3 | 11202011012000012 |
4 | 10003303221032 |
5 | 114413404310 |
6 | 10431433222 |
7 | 1454620121 |
oct | 403635116 |
9 | 152135005 |
10 | 68106830 |
11 | 35498740 |
12 | 1a985812 |
13 | 11157bcc |
14 | 908c3b8 |
15 | 5ea4c05 |
hex | 40f3a4e |
68106830 has 32 divisors (see below), whose sum is σ = 140780160. Its totient is φ = 23461920.
The previous prime is 68106817. The next prime is 68106847. The reversal of 68106830 is 3860186.
It is a plaindrome in base 13.
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 15 ways as a sum of consecutive naturals, for example, 14204 + ... + 18383.
It is an arithmetic number, because the mean of its divisors is an integer number (4399380).
Almost surely, 268106830 is an apocalyptic number.
68106830 is an abundant number, since it is smaller than the sum of its proper divisors (72673330).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68106830 is a wasteful number, since it uses less digits than its factorization.
68106830 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 32624.
The product of its (nonzero) digits is 6912, while the sum is 32.
The square root of 68106830 is about 8252.6862293438. The cubic root of 68106830 is about 408.3791450290.
The spelling of 68106830 in words is "sixty-eight million, one hundred six thousand, eight hundred thirty".
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