Base | Representation |
---|---|
bin | 1000001000010… |
… | …11111101001011 |
3 | 11202100020121101 |
4 | 10010023331023 |
5 | 114430101121 |
6 | 10433522231 |
7 | 1455513340 |
oct | 404137513 |
9 | 152306541 |
10 | 68206411 |
11 | 35556539 |
12 | 1aa13377 |
13 | 11191330 |
14 | 90b67c7 |
15 | 5ec4491 |
hex | 410bf4b |
68206411 has 32 divisors (see below), whose sum is σ = 87325056. Its totient is φ = 51840000.
The previous prime is 68206403. The next prime is 68206421. The reversal of 68206411 is 11460286.
It is a 10-Lehmer number, since φ(68206411) divides (68206411-1)10.
It is a cyclic number.
It is not a de Polignac number, because 68206411 - 23 = 68206403 is a prime.
It is a super-2 number, since 2×682064112 = 9304229003001842, which contains 22 as substring.
It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a self number, because there is not a number n which added to its sum of digits gives 68206411.
It is not an unprimeable number, because it can be changed into a prime (68206421) by changing a digit.
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 31 ways as a sum of consecutive naturals, for example, 376741 + ... + 376921.
It is an arithmetic number, because the mean of its divisors is an integer number (2728908).
Almost surely, 268206411 is an apocalyptic number.
68206411 is a deficient number, since it is larger than the sum of its proper divisors (19118645).
68206411 is a wasteful number, since it uses less digits than its factorization.
68206411 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 343.
The product of its (nonzero) digits is 2304, while the sum is 28.
The square root of 68206411 is about 8258.7172732816. The cubic root of 68206411 is about 408.5780824909.
Adding to 68206411 its reverse (11460286), we get a palindrome (79666697).
It can be divided in two parts, 6820 and 6411, that added together give a palindrome (13231).
The spelling of 68206411 in words is "sixty-eight million, two hundred six thousand, four hundred eleven".
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