Base | Representation |
---|---|
bin | 1010001001111… |
… | …01010101110001 |
3 | 12221021220002112 |
4 | 11010331111301 |
5 | 133301422110 |
6 | 12241455105 |
7 | 2053032260 |
oct | 504752561 |
9 | 187256075 |
10 | 85185905 |
11 | 440a3482 |
12 | 24641495 |
13 | 1485797c |
14 | b4565d7 |
15 | 772a405 |
hex | 513d571 |
85185905 has 64 divisors (see below), whose sum is σ = 130636800. Its totient is φ = 52039680.
The previous prime is 85185899. The next prime is 85185983. The reversal of 85185905 is 50958158.
It is not a de Polignac number, because 85185905 - 214 = 85169521 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (41).
It is a Curzon number.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 957101 + ... + 957189.
It is an arithmetic number, because the mean of its divisors is an integer number (2041200).
Almost surely, 285185905 is an apocalyptic number.
It is an amenable number.
85185905 is a deficient number, since it is larger than the sum of its proper divisors (45450895).
85185905 is a wasteful number, since it uses less digits than its factorization.
85185905 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 194.
The product of its (nonzero) digits is 72000, while the sum is 41.
The square root of 85185905 is about 9229.6210648108. The cubic root of 85185905 is about 440.0032799342.
The spelling of 85185905 in words is "eighty-five million, one hundred eighty-five thousand, nine hundred five".
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