Base | Representation |
---|---|
bin | 1111100010101… |
… | …11101111011001 |
3 | 100002100010120221 |
4 | 13301113233121 |
5 | 231334222214 |
6 | 20534320041 |
7 | 3142143544 |
oct | 761275731 |
9 | 302303527 |
10 | 130382809 |
11 | 67663597 |
12 | 377b9021 |
13 | 21020abb |
14 | 1345d85b |
15 | b6a6e24 |
hex | 7c57bd9 |
130382809 has 8 divisors (see below), whose sum is σ = 140658120. Its totient is φ = 120397056.
The previous prime is 130382801. The next prime is 130382827. The reversal of 130382809 is 908283031.
It can be written as a sum of positive squares in 4 ways, for example, as 19607184 + 110775625 = 4428^2 + 10525^2 .
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 130382809 - 23 = 130382801 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (130382801) 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, 71454 + ... + 73255.
It is an arithmetic number, because the mean of its divisors is an integer number (17582265).
Almost surely, 2130382809 is an apocalyptic number.
It is an amenable number.
130382809 is a deficient number, since it is larger than the sum of its proper divisors (10275311).
130382809 is a wasteful number, since it uses less digits than its factorization.
130382809 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 144779.
The product of its (nonzero) digits is 10368, while the sum is 34.
The square root of 130382809 is about 11418.5291960042. The cubic root of 130382809 is about 507.0764537877.
The spelling of 130382809 in words is "one hundred thirty million, three hundred eighty-two thousand, eight hundred nine".
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