Base | Representation |
---|---|
bin | 10111110000111100… |
… | …01000101000010110 |
3 | 1012221011112012201212 |
4 | 23320132020220112 |
5 | 202112144140310 |
6 | 5510004421422 |
7 | 631112113256 |
oct | 137036105026 |
9 | 35834465655 |
10 | 12758583830 |
11 | 5457984963 |
12 | 25809a7872 |
13 | 12843763b5 |
14 | 890685966 |
15 | 4ea166205 |
hex | 2f8788a16 |
12758583830 has 32 divisors (see below), whose sum is σ = 23771943936. Its totient is φ = 4926386304.
The previous prime is 12758583787. The next prime is 12758583839. The reversal of 12758583830 is 3838585721.
It is a super-2 number, since 2×127585838302 (a number of 21 digits) contains 22 as substring.
It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12758583839) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88769 + ... + 182748.
It is an arithmetic number, because the mean of its divisors is an integer number (742873248).
Almost surely, 212758583830 is an apocalyptic number.
12758583830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12758583830 is a deficient number, since it is larger than the sum of its proper divisors (11013360106).
12758583830 is a wasteful number, since it uses less digits than its factorization.
12758583830 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 271688.
The product of its (nonzero) digits is 1612800, while the sum is 50.
The spelling of 12758583830 in words is "twelve billion, seven hundred fifty-eight million, five hundred eighty-three thousand, eight hundred thirty".
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