Base | Representation |
---|---|
bin | 10010101000101100… |
… | …000111001010001010 |
3 | 1220122112100120201010 |
4 | 102220230013022022 |
5 | 311440030131010 |
6 | 13105323504350 |
7 | 1305603144243 |
oct | 225054071212 |
9 | 56575316633 |
10 | 20010005130 |
11 | 8539143025 |
12 | 3a653880b6 |
13 | 1b6b79b92b |
14 | d7b76bcca |
15 | 7c1a95620 |
hex | 4a8b0728a |
20010005130 has 64 divisors (see below), whose sum is σ = 49340067840. Its totient is φ = 5191136064.
The previous prime is 20010005123. The next prime is 20010005143. The reversal of 20010005130 is 3150001002.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192981 + ... + 277959.
It is an arithmetic number, because the mean of its divisors is an integer number (770938560).
Almost surely, 220010005130 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 20010005130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24670033920).
20010005130 is an abundant number, since it is smaller than the sum of its proper divisors (29330062710).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20010005130 is a wasteful number, since it uses less digits than its factorization.
20010005130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 85203.
The product of its (nonzero) digits is 30, while the sum is 12.
Adding to 20010005130 its reverse (3150001002), we get a palindrome (23160006132).
The spelling of 20010005130 in words is "twenty billion, ten million, five thousand, one hundred thirty".
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