Base | Representation |
---|---|
bin | 11010001000000010110 |
3 | 1121111022220 |
4 | 3101000112 |
5 | 204343321 |
6 | 30203210 |
7 | 10163610 |
oct | 3210026 |
9 | 1544286 |
10 | 856086 |
11 | 535210 |
12 | 353506 |
13 | 23c87a |
14 | 183db0 |
15 | 11d9c6 |
hex | d1016 |
856086 has 64 divisors (see below), whose sum is σ = 2280960. Its totient is φ = 207360.
The previous prime is 856081. The next prime is 856099. The reversal of 856086 is 680658.
856086 is a nontrivial binomial coefficient, being equal to C(1309, 2).
It is a Harshad number since it is a multiple of its sum of digits (33).
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (856081) by changing a digit.
856086 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7800 + ... + 7908.
It is an arithmetic number, because the mean of its divisors is an integer number (35640).
2856086 is an apocalyptic number.
856086 is the 1308-th triangular number.
It is a practical number, because each smaller number is the sum of distinct divisors of 856086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1140480).
856086 is an abundant number, since it is smaller than the sum of its proper divisors (1424874).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
856086 is a wasteful number, since it uses less digits than its factorization.
856086 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 149.
The product of its (nonzero) digits is 11520, while the sum is 33.
The square root of 856086 is about 925.2491556332. The cubic root of 856086 is about 94.9523676265.
It can be divided in two parts, 8560 and 86, that added together give a triangular number (8646 = T131).
The spelling of 856086 in words is "eight hundred fifty-six thousand, eighty-six".
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