Base | Representation |
---|---|
bin | 100010011000… |
… | …0011001001000 |
3 | 1020220201021212 |
4 | 1010300121020 |
5 | 14103232013 |
6 | 1442152252 |
7 | 306126062 |
oct | 104603110 |
9 | 36821255 |
10 | 18024008 |
11 | a1a0782 |
12 | 6052688 |
13 | 3970bc2 |
14 | 2572732 |
15 | 18b06a8 |
hex | 1130648 |
18024008 has 36 divisors (see below), whose sum is σ = 36124515. Its totient is φ = 8429616.
The previous prime is 18023981. The next prime is 18024011. The reversal of 18024008 is 80042081.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It can be written as a sum of positive squares in only one way, i.e., 9012004 + 9012004 = 3002^2 + 3002^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=3002.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 228113 + ... + 228191.
Almost surely, 218024008 is an apocalyptic number.
It is an amenable number.
18024008 is an abundant number, since it is smaller than the sum of its proper divisors (18100507).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18024008 is an equidigital number, since it uses as much as digits as its factorization.
18024008 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 202 (or 100 counting only the distinct ones).
The product of its (nonzero) digits is 512, while the sum is 23.
The square root of 18024008 is about 4245.4691142440. The cubic root of 18024008 is about 262.1906038781.
Multiplying 18024008 by its product of nonzero digits (512), we get a square (9228292096 = 960642).
Adding to 18024008 its reverse (80042081), we get a palindrome (98066089).
The spelling of 18024008 in words is "eighteen million, twenty-four thousand, eight".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •