Base | Representation |
---|---|
bin | 100010010101… |
… | …0100100000000 |
3 | 1020212111112102 |
4 | 1010222210000 |
5 | 14102001003 |
6 | 1441445532 |
7 | 305666336 |
oct | 104524400 |
9 | 36774472 |
10 | 18000128 |
11 | a184843 |
12 | 60408a8 |
13 | 3963083 |
14 | 2567b56 |
15 | 18a8588 |
hex | 112a900 |
18000128 has 18 divisors (see below), whose sum is σ = 35930454. Its totient is φ = 8999936.
The previous prime is 18000089. The next prime is 18000137. The reversal of 18000128 is 82100081.
It can be written as a sum of positive squares in only one way, i.e., 9048064 + 8952064 = 3008^2 + 2992^2 .
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34901 + ... + 35412.
Almost surely, 218000128 is an apocalyptic number.
It is an amenable number.
18000128 is a deficient number, since it is larger than the sum of its proper divisors (17930326).
18000128 is an frugal number, since it uses more digits than its factorization.
18000128 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 70329 (or 70315 counting only the distinct ones).
The product of its (nonzero) digits is 128, while the sum is 20.
The square root of 18000128 is about 4242.6557720371. The cubic root of 18000128 is about 262.0747606322.
The spelling of 18000128 in words is "eighteen million, one hundred twenty-eight", and thus it is an aban number.
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.065 sec. • engine limits •