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28065711360 = 283523317773
BaseRepresentation
bin11010001000110110…
…001100010100000000
32200102221120212012010
4122020312030110000
5424434310230420
620520533332520
72012331416241
oct321066142400
980387525163
1028065711360
11109a23a9385
125533197140
1328537174cb
1415035b6cc8
15ae3de64e0
hex688d8c500

28065711360 has 144 divisors (see below), whose sum is σ = 93532328064. Its totient is φ = 7158767616.

The previous prime is 28065711313. The next prime is 28065711367. The reversal of 28065711360 is 6311756082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28065711367) 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, 70567 + ... + 247206.

It is an arithmetic number, because the mean of its divisors is an integer number (649530056).

Almost surely, 228065711360 is an apocalyptic number.

28065711360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28065711360 is an abundant number, since it is smaller than the sum of its proper divisors (65466616704).

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

28065711360 is a wasteful number, since it uses less digits than its factorization.

28065711360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317820 (or 317806 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 28065711360 in words is "twenty-eight billion, sixty-five million, seven hundred eleven thousand, three hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 23 24 30 32 40 46 48 60 64 69 80 92 96 115 120 128 138 160 184 192 230 240 256 276 320 345 368 384 460 480 552 640 690 736 768 920 960 1104 1280 1380 1472 1840 1920 2208 2760 2944 3680 3840 4416 5520 5888 7360 8832 11040 14720 17664 22080 29440 44160 88320 317773 635546 953319 1271092 1588865 1906638 2542184 3177730 3813276 4766595 5084368 6355460 7308779 7626552 9533190 10168736 12710920 14617558 15253104 19066380 20337472 21926337 25421840 29235116 30506208 36543895 38132760 40674944 43852674 50843680 58470232 61012416 73087790 76265520 81349888 87705348 101687360 109631685 116940464 122024832 146175580 152531040 175410696 203374720 219263370 233880928 244049664 292351160 305062080 350821392 406749440 438526740 467761856 584702320 610124160 701642784 877053480 935523712 1169404640 1220248320 1403285568 1754106960 1871047424 2338809280 2806571136 3508213920 4677618560 5613142272 7016427840 9355237120 14032855680 28065711360