Base | Representation |
---|---|
bin | 100100011110110… |
… | …1111010010010010 |
3 | 10011022102221220100 |
4 | 1020331233102102 |
5 | 10001340102033 |
6 | 321245353230 |
7 | 42223023666 |
oct | 11075572222 |
9 | 3138387810 |
10 | 1224144018 |
11 | 578aa7579 |
12 | 2a1b68816 |
13 | 1667c8b96 |
14 | b88168a6 |
15 | 72709513 |
hex | 48f6f492 |
1224144018 has 24 divisors (see below), whose sum is σ = 2668590288. Its totient is φ = 405543672.
The previous prime is 1224144017. The next prime is 1224144023. The reversal of 1224144018 is 8104414221.
1224144018 is a `hidden beast` number, since 12 + 241 + 4 + 401 + 8 = 666.
1224144018 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.
It is a junction number, because it is equal to n+sod(n) for n = 1224143982 and 1224144000.
It is not an unprimeable number, because it can be changed into a prime (1224144017) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205680 + ... + 211547.
It is an arithmetic number, because the mean of its divisors is an integer number (111191262).
Almost surely, 21224144018 is an apocalyptic number.
1224144018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
1224144018 is an abundant number, since it is smaller than the sum of its proper divisors (1444446270).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1224144018 is a wasteful number, since it uses less digits than its factorization.
1224144018 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 417398 (or 417395 counting only the distinct ones).
The product of its (nonzero) digits is 2048, while the sum is 27.
The square root of 1224144018 is about 34987.7695488009. The cubic root of 1224144018 is about 1069.7382007186.
Adding to 1224144018 its reverse (8104414221), we get a palindrome (9328558239).
The spelling of 1224144018 in words is "one billion, two hundred twenty-four million, one hundred forty-four thousand, eighteen".
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