Base | Representation |
---|---|
bin | 1010010111111… |
… | …11101101110111 |
3 | 20001202121121022 |
4 | 11023333231313 |
5 | 134234440042 |
6 | 12345211355 |
7 | 2104514444 |
oct | 513775567 |
9 | 201677538 |
10 | 87030647 |
11 | 45143460 |
12 | 25190b5b |
13 | 15052532 |
14 | b7b69cb |
15 | 7991cd2 |
hex | 52ffb77 |
87030647 has 8 divisors (see below), whose sum is σ = 95044752. Its totient is φ = 79033600.
The previous prime is 87030617. The next prime is 87030661. The reversal of 87030647 is 74603078.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 87030647 - 210 = 87029623 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87030607) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7943 + ... + 15399.
It is an arithmetic number, because the mean of its divisors is an integer number (11880594).
Almost surely, 287030647 is an apocalyptic number.
87030647 is a deficient number, since it is larger than the sum of its proper divisors (8014105).
87030647 is a wasteful number, since it uses less digits than its factorization.
87030647 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8529.
The product of its (nonzero) digits is 28224, while the sum is 35.
The square root of 87030647 is about 9329.0217600775. The cubic root of 87030647 is about 443.1567860674.
The spelling of 87030647 in words is "eighty-seven million, thirty thousand, six hundred forty-seven".
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