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20130213130 = 258922618217
BaseRepresentation
bin10010101111110110…
…101010110100001010
31220221220112210002021
4102233312222310022
5312211313310010
613125300155054
71311562663006
oct225766526412
956856483067
1020130213130
11859aa87085
123a99698a8a
131b8a669421
14d8d6dd706
157cc3dc8da
hex4afdaad0a

20130213130 has 16 divisors (see below), whose sum is σ = 36641513160. Its totient is φ = 7961612032.

The previous prime is 20130213121. The next prime is 20130213133. The reversal of 20130213130 is 3131203102.

It can be written as a sum of positive squares in 4 ways, for example, as 16133318289 + 3996894841 = 127017^2 + 63221^2 .

It is not an unprimeable number, because it can be changed into a prime (20130213133) 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 7 ways as a sum of consecutive naturals, for example, 11308219 + ... + 11309998.

Almost surely, 220130213130 is an apocalyptic number.

20130213130 is a deficient number, since it is larger than the sum of its proper divisors (16511300030).

20130213130 is a wasteful number, since it uses less digits than its factorization.

20130213130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22618313.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20130213130 its reverse (3131203102), we get a palindrome (23261416232).

The spelling of 20130213130 in words is "twenty billion, one hundred thirty million, two hundred thirteen thousand, one hundred thirty".

Divisors: 1 2 5 10 89 178 445 890 22618217 45236434 113091085 226182170 2013021313 4026042626 10065106565 20130213130