Base | Representation |
---|---|
bin | 1000001001100… |
… | …11101001001011 |
3 | 11202122111121010 |
4 | 10010303221023 |
5 | 120000301341 |
6 | 10441215003 |
7 | 1460061306 |
oct | 404635113 |
9 | 152574533 |
10 | 68368971 |
11 | 35657690 |
12 | 1aa91463 |
13 | 1121a318 |
14 | 9119b3d |
15 | 6007716 |
hex | 4133a4b |
68368971 has 16 divisors (see below), whose sum is σ = 99590400. Its totient is φ = 41375520.
The previous prime is 68368969. The next prime is 68368987. The reversal of 68368971 is 17986386.
68368971 is a nontrivial binomial coefficient, being equal to C(11694, 2).
It is not a de Polignac number, because 68368971 - 21 = 68368969 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 68368971.
It is not an unprimeable number, because it can be changed into a prime (68368931) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34105 + ... + 36053.
It is an arithmetic number, because the mean of its divisors is an integer number (6224400).
Almost surely, 268368971 is an apocalyptic number.
68368971 is the 11693-rd triangular number and also the 5847-th hexagonal number.
68368971 is a deficient number, since it is larger than the sum of its proper divisors (31221429).
68368971 is a wasteful number, since it uses less digits than its factorization.
68368971 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3026.
The product of its digits is 435456, while the sum is 48.
The square root of 68368971 is about 8268.5531382461. The cubic root of 68368971 is about 408.9024203141.
The spelling of 68368971 in words is "sixty-eight million, three hundred sixty-eight thousand, nine hundred seventy-one".
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