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12104431188 = 2231764192567
BaseRepresentation
bin10110100010111101…
…01111011001010100
31011020120121211000020
423101132233121110
5144242213244223
65321035545140
7605646652563
oct132136573124
934216554006
1012104431188
1151516aa343
1224198bb1b0
1311ab99a225
1482b843bda
154ac9ed1e3
hex2d17af654

12104431188 has 48 divisors (see below), whose sum is σ = 29952042624. Its totient is φ = 3791503360.

The previous prime is 12104431187. The next prime is 12104431201. The reversal of 12104431188 is 88113440121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12104431187) 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 15 ways as a sum of consecutive naturals, for example, 84481 + ... + 177047.

It is an arithmetic number, because the mean of its divisors is an integer number (624000888).

Almost surely, 212104431188 is an apocalyptic number.

It is an amenable number.

12104431188 is an abundant number, since it is smaller than the sum of its proper divisors (17847611436).

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

12104431188 is a wasteful number, since it uses less digits than its factorization.

12104431188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93232 (or 93230 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The spelling of 12104431188 in words is "twelve billion, one hundred four million, four hundred thirty-one thousand, one hundred eighty-eight".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 641 1282 1923 2564 3846 7692 10897 21794 32691 43588 65382 92567 130764 185134 277701 370268 555402 1110804 1573639 3147278 4720917 6294556 9441834 18883668 59335447 118670894 178006341 237341788 356012682 712025364 1008702599 2017405198 3026107797 4034810396 6052215594 12104431188