Base | Representation |
---|---|
bin | 10010111010000110… |
… | …010111011010100010 |
3 | 1221101212222112201110 |
4 | 102322012113122202 |
5 | 313034314201010 |
6 | 13154320244150 |
7 | 1316051001204 |
oct | 227206273242 |
9 | 57355875643 |
10 | 20302100130 |
11 | 8679008354 |
12 | 3b27170656 |
13 | 1bb715c600 |
14 | da8484774 |
15 | 7dc542120 |
hex | 4ba1976a2 |
20302100130 has 48 divisors (see below), whose sum is σ = 52761447360. Its totient is φ = 4997438784.
The previous prime is 20302100123. The next prime is 20302100171. The reversal of 20302100130 is 3100120302.
It is a happy 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 23 ways as a sum of consecutive naturals, for example, 1997110 + ... + 2007249.
It is an arithmetic number, because the mean of its divisors is an integer number (1099196820).
Almost surely, 220302100130 is an apocalyptic number.
20302100130 is an abundant number, since it is smaller than the sum of its proper divisors (32459347230).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20302100130 is a wasteful number, since it uses less digits than its factorization.
20302100130 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4004395 (or 4004382 counting only the distinct ones).
The product of its (nonzero) digits is 36, while the sum is 12.
Adding to 20302100130 its reverse (3100120302), we get a palindrome (23402220432).
The spelling of 20302100130 in words is "twenty billion, three hundred two million, one hundred thousand, one hundred thirty".
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