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12726894860 = 2251016300443
BaseRepresentation
bin10111101101001010…
…10000000100001100
31012211221220020122022
423312211100010030
5202031041113420
65502513305312
7630245551511
oct136645200414
935757806568
1012726894860
115441000529
122572265238
13127a92c724
1488a397308
154e74a6c25
hex2f695010c

12726894860 has 24 divisors (see below), whose sum is σ = 26991102096. Its totient is φ = 5040353600.

The previous prime is 12726894853. The next prime is 12726894863. The reversal of 12726894860 is 6849862721.

It is not an unprimeable number, because it can be changed into a prime (12726894863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3148202 + ... + 3152241.

It is an arithmetic number, because the mean of its divisors is an integer number (1124629254).

Almost surely, 212726894860 is an apocalyptic number.

12726894860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12726894860 is an abundant number, since it is smaller than the sum of its proper divisors (14264207236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12726894860 is a wasteful number, since it uses less digits than its factorization.

12726894860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6300553 (or 6300551 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 12726894860 in words is "twelve billion, seven hundred twenty-six million, eight hundred ninety-four thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 101 202 404 505 1010 2020 6300443 12600886 25201772 31502215 63004430 126008860 636344743 1272689486 2545378972 3181723715 6363447430 12726894860