Base | Representation |
---|---|
bin | 1111100010001… |
… | …01011100101101 |
3 | 100002012022210222 |
4 | 13301011130231 |
5 | 231324323020 |
6 | 20532541125 |
7 | 3141412241 |
oct | 761053455 |
9 | 302168728 |
10 | 130307885 |
11 | 67612274 |
12 | 377817a5 |
13 | 20cc5976 |
14 | 13440421 |
15 | b68eb25 |
hex | 7c4572d |
130307885 has 4 divisors (see below), whose sum is σ = 156369468. Its totient is φ = 104246304.
The previous prime is 130307803. The next prime is 130307897. The reversal of 130307885 is 588703031.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588703031 = 7 ⋅84100433.
It can be written as a sum of positive squares in 2 ways, for example, as 64032004 + 66275881 = 8002^2 + 8141^2 .
It is a cyclic number.
It is not a de Polignac number, because 130307885 - 210 = 130306861 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13030784 + ... + 13030793.
It is an arithmetic number, because the mean of its divisors is an integer number (39092367).
Almost surely, 2130307885 is an apocalyptic number.
It is an amenable number.
130307885 is a deficient number, since it is larger than the sum of its proper divisors (26061583).
130307885 is an equidigital number, since it uses as much as digits as its factorization.
130307885 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 26061582.
The product of its (nonzero) digits is 20160, while the sum is 35.
The square root of 130307885 is about 11415.2479167121. The cubic root of 130307885 is about 506.9793053057.
The spelling of 130307885 in words is "one hundred thirty million, three hundred seven thousand, eight hundred eighty-five".
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