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8128080 = 243355371
BaseRepresentation
bin11111000000011001010000
3120021221122000
4133000121100
54040044310
6450114000
7126042012
oct37003120
916257560
108128080
114651824
12287b900
1318b781c
1411181b2
15aa84c0
hex7c0650

8128080 has 160 divisors (see below), whose sum is σ = 28926720. Its totient is φ = 2096640.

The previous prime is 8128069. The next prime is 8128111. The reversal of 8128080 is 808218.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114445 + ... + 114515.

It is an arithmetic number, because the mean of its divisors is an integer number (180792).

Almost surely, 28128080 is an apocalyptic number.

8128080 is a gapful number since it is divisible by the number (80) 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 8128080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14463360).

8128080 is an abundant number, since it is smaller than the sum of its proper divisors (20798640).

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

8128080 is a wasteful number, since it uses less digits than its factorization.

8128080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 8128080 is about 2850.9787792967. The cubic root of 8128080 is about 201.0616874594.

The spelling of 8128080 in words is "eight million, one hundred twenty-eight thousand, eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 53 54 60 71 72 80 90 106 108 120 135 142 144 159 180 212 213 216 240 265 270 284 318 355 360 424 426 432 477 530 540 568 636 639 710 720 795 848 852 954 1060 1065 1080 1136 1272 1278 1420 1431 1590 1704 1908 1917 2120 2130 2160 2385 2544 2556 2840 2862 3180 3195 3408 3763 3816 3834 4240 4260 4770 5112 5680 5724 6360 6390 7155 7526 7632 7668 8520 9540 9585 10224 11289 11448 12720 12780 14310 15052 15336 17040 18815 19080 19170 22578 22896 25560 28620 30104 30672 33867 37630 38160 38340 45156 51120 56445 57240 60208 67734 75260 76680 90312 101601 112890 114480 135468 150520 153360 169335 180624 203202 225780 270936 301040 338670 406404 451560 508005 541872 677340 812808 903120 1016010 1354680 1625616 2032020 2709360 4064040 8128080