Base | Representation |
---|---|
bin | 1010011000111… |
… | …11010010011000 |
3 | 20002000011222200 |
4 | 11030133102120 |
5 | 134303104320 |
6 | 12352050200 |
7 | 2105563446 |
oct | 514372230 |
9 | 202004880 |
10 | 87159960 |
11 | 45221628 |
12 | 25233960 |
13 | 15099354 |
14 | b80bb96 |
15 | 79ba290 |
hex | 531f498 |
87159960 has 96 divisors (see below), whose sum is σ = 286781040. Its totient is φ = 22954752.
The previous prime is 87159959. The next prime is 87159967. The reversal of 87159960 is 6995178.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87159967) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28422 + ... + 31338.
It is a vampire number, since it can be written as 8751 ⋅ 9960 (with its own digits).
Almost surely, 287159960 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 87159960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143390520).
87159960 is an abundant number, since it is smaller than the sum of its proper divisors (199621080).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87159960 is a wasteful number, since it uses less digits than its factorization.
87159960 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3017 (or 3010 counting only the distinct ones).
The product of its (nonzero) digits is 136080, while the sum is 45.
The square root of 87159960 is about 9335.9498713307. The cubic root of 87159960 is about 443.3761630973.
The spelling of 87159960 in words is "eighty-seven million, one hundred fifty-nine thousand, nine hundred sixty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.065 sec. • engine limits •