Base | Representation |
---|---|
bin | 10000001101000111… |
… | …10111011101010111 |
3 | 211110022120210111110 |
4 | 20012203313131113 |
5 | 120304200000322 |
6 | 3555143110103 |
7 | 425410531512 |
oct | 100643673527 |
9 | 24408523443 |
10 | 8700000087 |
11 | 3764a17919 |
12 | 1829742333 |
13 | a8858255c |
14 | 5c7641d79 |
15 | 35dbbcc0c |
hex | 2068f7757 |
8700000087 has 16 divisors (see below), whose sum is σ = 12705884640. Its totient is φ = 5270587392.
The previous prime is 8700000073. The next prime is 8700000139. The reversal of 8700000087 is 7800000078.
It is a happy number.
It is not a de Polignac number, because 8700000087 - 220 = 8698951511 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8700004087) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2939698 + ... + 2942655.
It is an arithmetic number, because the mean of its divisors is an integer number (794117790).
Almost surely, 28700000087 is an apocalyptic number.
8700000087 is a gapful number since it is divisible by the number (87) formed by its first and last digit.
8700000087 is a deficient number, since it is larger than the sum of its proper divisors (4005884553).
8700000087 is a wasteful number, since it uses less digits than its factorization.
8700000087 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5882402.
The product of its (nonzero) digits is 3136, while the sum is 30.
The square root of 8700000087 is about 93273.7909972571. The cubic root of 8700000087 is about 2056.7101230617.
Subtracting from 8700000087 its reverse (7800000078), we obtain a palindrome (900000009).
It can be divided in two parts, 87000000 and 87, that multiplied together give a square (7569000000 = 870002).
The spelling of 8700000087 in words is "eight billion, seven hundred million, eighty-seven", and thus it is an aban number.
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.076 sec. • engine limits •