Base | Representation |
---|---|
bin | 1010011101000… |
… | …01111100101001 |
3 | 20010000101010100 |
4 | 11032201330221 |
5 | 134422221040 |
6 | 12411340013 |
7 | 2113252656 |
oct | 516417451 |
9 | 203011110 |
10 | 87695145 |
11 | 4555772a |
12 | 25451609 |
13 | 15225b25 |
14 | b90ac2d |
15 | 7a73b30 |
hex | 53a1f29 |
87695145 has 24 divisors (see below), whose sum is σ = 152246016. Its totient is φ = 46696608.
The previous prime is 87695117. The next prime is 87695149. The reversal of 87695145 is 54159678.
It is not a de Polignac number, because 87695145 - 28 = 87694889 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 87695145.
It is not an unprimeable number, because it can be changed into a prime (87695149) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38632 + ... + 40838.
It is an arithmetic number, because the mean of its divisors is an integer number (6343584).
Almost surely, 287695145 is an apocalyptic number.
It is an amenable number.
87695145 is a deficient number, since it is larger than the sum of its proper divisors (64550871).
87695145 is a wasteful number, since it uses less digits than its factorization.
87695145 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3101 (or 3098 counting only the distinct ones).
The product of its digits is 302400, while the sum is 45.
The square root of 87695145 is about 9364.5685965772. The cubic root of 87695145 is about 444.2817939669.
The spelling of 87695145 in words is "eighty-seven million, six hundred ninety-five thousand, one hundred forty-five".
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