Base | Representation |
---|---|
bin | 1010010111110… |
… | …10111001000101 |
3 | 20001201121111101 |
4 | 11023322321011 |
5 | 134233322020 |
6 | 12344540101 |
7 | 2104403023 |
oct | 513727105 |
9 | 201647441 |
10 | 87010885 |
11 | 4512a625 |
12 | 25181631 |
13 | 15046540 |
14 | b7ad713 |
15 | 798b00a |
hex | 52fae45 |
87010885 has 16 divisors (see below), whose sum is σ = 113485680. Its totient is φ = 63659520.
The previous prime is 87010877. The next prime is 87010921. The reversal of 87010885 is 58801078.
It can be written as a sum of positive squares in 8 ways, for example, as 185761 + 86825124 = 431^2 + 9318^2 .
It is not a de Polignac number, because 87010885 - 23 = 87010877 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945 + ... + 13225.
It is an arithmetic number, because the mean of its divisors is an integer number (7092855).
Almost surely, 287010885 is an apocalyptic number.
It is an amenable number.
87010885 is a deficient number, since it is larger than the sum of its proper divisors (26474795).
87010885 is a wasteful number, since it uses less digits than its factorization.
87010885 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12408.
The product of its (nonzero) digits is 17920, while the sum is 37.
The square root of 87010885 is about 9327.9625320860. The cubic root of 87010885 is about 443.1232410743.
The spelling of 87010885 in words is "eighty-seven million, ten thousand, eight hundred eighty-five".
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