Base | Representation |
---|---|
bin | 1010011000001… |
… | …00000111101111 |
3 | 20001210112100110 |
4 | 11030010013233 |
5 | 134241024222 |
6 | 12345431103 |
7 | 2104621155 |
oct | 514040757 |
9 | 201715313 |
10 | 87048687 |
11 | 45155a70 |
12 | 2519b493 |
13 | 1505a7cb |
14 | b7bd3d5 |
15 | 799730c |
hex | 53041ef |
87048687 has 16 divisors (see below), whose sum is σ = 134065152. Its totient is φ = 49653120.
The previous prime is 87048667. The next prime is 87048701. The reversal of 87048687 is 78684078.
It is not a de Polignac number, because 87048687 - 28 = 87048431 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87048667) 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 15 ways as a sum of consecutive naturals, for example, 77023 + ... + 78144.
It is an arithmetic number, because the mean of its divisors is an integer number (8379072).
Almost surely, 287048687 is an apocalyptic number.
87048687 is a deficient number, since it is larger than the sum of its proper divisors (47016465).
87048687 is a wasteful number, since it uses less digits than its factorization.
87048687 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 155198.
The product of its (nonzero) digits is 602112, while the sum is 48.
The square root of 87048687 is about 9329.9885852020. The cubic root of 87048687 is about 443.1874036195.
It can be divided in two parts, 8704 and 8687, that added together give a triangular number (17391 = T186).
The spelling of 87048687 in words is "eighty-seven million, forty-eight thousand, six hundred eighty-seven".
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