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20010005130 = 2354716784979
BaseRepresentation
bin10010101000101100…
…000111001010001010
31220122112100120201010
4102220230013022022
5311440030131010
613105323504350
71305603144243
oct225054071212
956575316633
1020010005130
118539143025
123a653880b6
131b6b79b92b
14d7b76bcca
157c1a95620
hex4a8b0728a

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".

Divisors: 1 2 3 5 6 10 15 30 47 94 141 167 235 282 334 470 501 705 835 1002 1410 1670 2505 5010 7849 15698 23547 39245 47094 78490 84979 117735 169958 235470 254937 424895 509874 849790 1274685 2549370 3994013 7988026 11982039 14191493 19970065 23964078 28382986 39940130 42574479 59910195 70957465 85148958 119820390 141914930 212872395 425744790 667000171 1334000342 2001000513 3335000855 4002001026 6670001710 10005002565 20010005130