Base | Representation |
---|---|
bin | 1110110111011011011 |
3 | 220202012220 |
4 | 1312323123 |
5 | 111042011 |
6 | 14235123 |
7 | 4066131 |
oct | 1667333 |
9 | 822186 |
10 | 487131 |
11 | 302a97 |
12 | 1b5aa3 |
13 | 140958 |
14 | c9751 |
15 | 99506 |
hex | 76edb |
487131 has 8 divisors (see below), whose sum is σ = 658944. Its totient is φ = 320040.
The previous prime is 487111. The next prime is 487133. The reversal of 487131 is 131784.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 487131 - 25 = 487099 is a prime.
It is a super-2 number, since 2×4871312 = 474593222322, which contains 22 as substring.
487131 is a lucky number.
It is a nialpdrome in base 14.
It is not an unprimeable number, because it can be changed into a prime (487133) 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, 931 + ... + 1356.
It is an arithmetic number, because the mean of its divisors is an integer number (82368).
2487131 is an apocalyptic number.
487131 is a deficient number, since it is larger than the sum of its proper divisors (171813).
487131 is a wasteful number, since it uses less digits than its factorization.
487131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2361.
The product of its digits is 672, while the sum is 24.
The square root of 487131 is about 697.9477057774. The cubic root of 487131 is about 78.6831834354.
The spelling of 487131 in words is "four hundred eighty-seven thousand, one hundred thirty-one".
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