Base | Representation |
---|---|
bin | 100100111011000… |
… | …0001110111111111 |
3 | 10012100012122121110 |
4 | 1021312001313333 |
5 | 10014124301343 |
6 | 322533533103 |
7 | 42462323001 |
oct | 11166016777 |
9 | 3170178543 |
10 | 1238900223 |
11 | 586366090 |
12 | 2a6aa4193 |
13 | 169894572 |
14 | ba778371 |
15 | 73b71833 |
hex | 49d81dff |
1238900223 has 16 divisors (see below), whose sum is σ = 1803568896. Its totient is φ = 750210240.
The previous prime is 1238900207. The next prime is 1238900227. The reversal of 1238900223 is 3220098321.
It is a happy number.
It is not a de Polignac number, because 1238900223 - 24 = 1238900207 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1238900227) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25011 + ... + 55707.
It is an arithmetic number, because the mean of its divisors is an integer number (112723056).
Almost surely, 21238900223 is an apocalyptic number.
1238900223 is a deficient number, since it is larger than the sum of its proper divisors (564668673).
1238900223 is a wasteful number, since it uses less digits than its factorization.
1238900223 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 31934.
The product of its (nonzero) digits is 5184, while the sum is 30.
The square root of 1238900223 is about 35198.0144752513. The cubic root of 1238900223 is about 1074.0193611288.
Adding to 1238900223 its reverse (3220098321), we get a palindrome (4458998544).
The spelling of 1238900223 in words is "one billion, two hundred thirty-eight million, nine hundred thousand, two hundred twenty-three".
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