Base | Representation |
---|---|
bin | 1010011010011… |
… | …01011010101101 |
3 | 20002100210011210 |
4 | 11031031122231 |
5 | 134330131114 |
6 | 12400105033 |
7 | 2110311354 |
oct | 515153255 |
9 | 202323153 |
10 | 87348909 |
11 | 4534058a |
12 | 25305179 |
13 | 1513435b |
14 | b85a99b |
15 | 7a06259 |
hex | 534d6ad |
87348909 has 16 divisors (see below), whose sum is σ = 122904000. Its totient is φ = 55028736.
The previous prime is 87348893. The next prime is 87348913. The reversal of 87348909 is 90984378.
It is not a de Polignac number, because 87348909 - 24 = 87348893 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87348109) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23887 + ... + 27299.
It is an arithmetic number, because the mean of its divisors is an integer number (7681500).
Almost surely, 287348909 is an apocalyptic number.
It is an amenable number.
87348909 is a deficient number, since it is larger than the sum of its proper divisors (35555091).
87348909 is a wasteful number, since it uses less digits than its factorization.
87348909 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3884.
The product of its (nonzero) digits is 435456, while the sum is 48.
The square root of 87348909 is about 9346.0638238779. The cubic root of 87348909 is about 443.6963216430.
The spelling of 87348909 in words is "eighty-seven million, three hundred forty-eight thousand, nine hundred nine".
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