Base | Representation |
---|---|
bin | 1111100101000… |
… | …00010110011101 |
3 | 100002220020120012 |
4 | 13302200112131 |
5 | 231423231341 |
6 | 20544533005 |
7 | 3144522620 |
oct | 762402635 |
9 | 302806505 |
10 | 130680221 |
11 | 67846a91 |
12 | 37921165 |
13 | 210c6299 |
14 | 134d9db7 |
15 | b7150eb |
hex | 7ca059d |
130680221 has 24 divisors (see below), whose sum is σ = 157730304. Its totient is φ = 105945120.
The previous prime is 130680211. The next prime is 130680223. The reversal of 130680221 is 122086031.
It is a de Polignac number, because none of the positive numbers 2k-130680221 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 (130680223) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 755291 + ... + 755463.
It is an arithmetic number, because the mean of its divisors is an integer number (6572096).
Almost surely, 2130680221 is an apocalyptic number.
It is an amenable number.
130680221 is a deficient number, since it is larger than the sum of its proper divisors (27050083).
130680221 is an equidigital number, since it uses as much as digits as its factorization.
130680221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 329 (or 270 counting only the distinct ones).
The product of its (nonzero) digits is 576, while the sum is 23.
The square root of 130680221 is about 11431.5449961936. The cubic root of 130680221 is about 507.4617195519.
The spelling of 130680221 in words is "one hundred thirty million, six hundred eighty thousand, two hundred twenty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.068 sec. • engine limits •