Base | Representation |
---|---|
bin | 10010101111110111… |
… | …000010100100011000 |
3 | 1220221220201201112202 |
4 | 102233313002210120 |
5 | 312211324413144 |
6 | 13125302225332 |
7 | 1311563546450 |
oct | 225767024430 |
9 | 56856651482 |
10 | 20130310424 |
11 | 85a0043194 |
12 | 3a99725248 |
13 | 1b8a6a17b3 |
14 | d8d726d60 |
15 | 7cc40b64e |
hex | 4afdc2918 |
20130310424 has 64 divisors (see below), whose sum is σ = 45581875200. Its totient is φ = 8147677824.
The previous prime is 20130310411. The next prime is 20130310433. The reversal of 20130310424 is 42401303102.
It is a junction number, because it is equal to n+sod(n) for n = 20130310396 and 20130310405.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2834 + ... + 200670.
It is an arithmetic number, because the mean of its divisors is an integer number (712216800).
Almost surely, 220130310424 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 20130310424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22790937600).
20130310424 is an abundant number, since it is smaller than the sum of its proper divisors (25451564776).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20130310424 is a wasteful number, since it uses less digits than its factorization.
20130310424 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 197952 (or 197948 counting only the distinct ones).
The product of its (nonzero) digits is 576, while the sum is 20.
Adding to 20130310424 its reverse (42401303102), we get a palindrome (62531613526).
The spelling of 20130310424 in words is "twenty billion, one hundred thirty million, three hundred ten thousand, four hundred twenty-four".
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