Base | Representation |
---|---|
bin | 1111100000011… |
… | …00000100100111 |
3 | 100001202101102202 |
4 | 13300030010213 |
5 | 231244312441 |
6 | 20523525115 |
7 | 3136413125 |
oct | 760140447 |
9 | 301671382 |
10 | 130072871 |
11 | 67471745 |
12 | 3768979b |
13 | 20c429c6 |
14 | 133bc915 |
15 | b64519b |
hex | 7c0c127 |
130072871 has 4 divisors (see below), whose sum is σ = 133588392. Its totient is φ = 126557352.
The previous prime is 130072847. The next prime is 130072883. The reversal of 130072871 is 178270031.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 130072871 - 210 = 130071847 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130072571) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1757705 + ... + 1757778.
It is an arithmetic number, because the mean of its divisors is an integer number (33397098).
Almost surely, 2130072871 is an apocalyptic number.
130072871 is a deficient number, since it is larger than the sum of its proper divisors (3515521).
130072871 is an equidigital number, since it uses as much as digits as its factorization.
130072871 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3515520.
The product of its (nonzero) digits is 2352, while the sum is 29.
The square root of 130072871 is about 11404.9494080421. The cubic root of 130072871 is about 506.6743379975.
The spelling of 130072871 in words is "one hundred thirty million, seventy-two thousand, eight hundred seventy-one".
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