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12758583830 = 2537127271517
BaseRepresentation
bin10111110000111100…
…01000101000010110
31012221011112012201212
423320132020220112
5202112144140310
65510004421422
7631112113256
oct137036105026
935834465655
1012758583830
115457984963
1225809a7872
1312843763b5
14890685966
154ea166205
hex2f8788a16

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".

Divisors: 1 2 5 10 37 74 127 185 254 370 635 1270 4699 9398 23495 46990 271517 543034 1357585 2715170 10046129 20092258 34482659 50230645 68965318 100461290 172413295 344826590 1275858383 2551716766 6379291915 12758583830