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128536848 = 24331122459
BaseRepresentation
bin1111010100101…
…01000100010000
322221212100102000
413222111010100
5230401134343
620430554000
73120354666
oct752250420
9287770360
10128536848
1166612700
1237068900
132082580b
14130dcc36
15b43eed3
hex7a95110

128536848 has 120 divisors (see below), whose sum is σ = 405703200. Its totient is φ = 38934720.

The previous prime is 128536817. The next prime is 128536861. The reversal of 128536848 is 848635821.

128536848 is a `hidden beast` number, since 1 + 285 + 368 + 4 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51043 + ... + 53501.

It is an arithmetic number, because the mean of its divisors is an integer number (3380860).

Almost surely, 2128536848 is an apocalyptic number.

128536848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128536848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202851600).

128536848 is an abundant number, since it is smaller than the sum of its proper divisors (277166352).

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

128536848 is a wasteful number, since it uses less digits than its factorization.

128536848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498 (or 2475 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 128536848 is about 11337.4092278615. The cubic root of 128536848 is about 504.6720060799.

It can be divided in two parts, 12853 and 6848, that added together give a triangular number (19701 = T198).

The spelling of 128536848 in words is "one hundred twenty-eight million, five hundred thirty-six thousand, eight hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 11 12 16 18 22 24 27 33 36 44 48 54 66 72 88 99 108 121 132 144 176 198 216 242 264 297 363 396 432 484 528 594 726 792 968 1089 1188 1452 1584 1936 2178 2376 2459 2904 3267 4356 4752 4918 5808 6534 7377 8712 9836 13068 14754 17424 19672 22131 26136 27049 29508 39344 44262 52272 54098 59016 66393 81147 88524 108196 118032 132786 162294 177048 216392 243441 265572 297539 324588 354096 432784 486882 531144 595078 649176 730323 892617 973764 1062288 1190156 1298352 1460646 1785234 1947528 2380312 2677851 2921292 3570468 3895056 4760624 5355702 5842584 7140936 8033553 10711404 11685168 14281872 16067106 21422808 32134212 42845616 64268424 128536848