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28869426827660 = 225711193153111131
BaseRepresentation
bin1101001000001101011111…
…11011100101000110001100
310210012220000222210220202002
412210012233323211012030
512240444041231441120
6141222233120251432
76036514211110346
oct644065773450614
9123186028726662
1028869426827660
119220500902191
1232a3108770b78
1313154b5607373
1471b4056b6296
15350e60230375
hex1a41afee518c

28869426827660 has 96 divisors (see below), whose sum is σ = 61576936210944. Its totient is φ = 11367131328000.

The previous prime is 28869426827611. The next prime is 28869426827701. The reversal of 28869426827660 is 6672862496882.

It is a super-2 number, since 2×288694268276602 (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2593600295 + ... + 2593611425.

It is an arithmetic number, because the mean of its divisors is an integer number (641426418864).

Almost surely, 228869426827660 is an apocalyptic number.

28869426827660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28869426827660 is an abundant number, since it is smaller than the sum of its proper divisors (32707509383284).

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

28869426827660 is a wasteful number, since it uses less digits than its factorization.

28869426827660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13935 (or 13933 counting only the distinct ones).

The product of its (nonzero) digits is 1337720832, while the sum is 74.

The spelling of 28869426827660 in words is "twenty-eight trillion, eight hundred sixty-nine billion, four hundred twenty-six million, eight hundred twenty-seven thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 71 142 284 355 710 1193 1420 1531 2386 3062 4772 5965 6124 7655 11131 11930 15310 22262 23860 30620 44524 55655 84703 108701 111310 169406 217402 222620 338812 423515 434804 543505 790301 847030 1087010 1580602 1694060 1826483 2174020 3161204 3652966 3951505 7305932 7903010 9132415 13279283 15806020 17041561 18264830 26558566 34083122 36529660 53117132 66396415 68166244 85207805 129680293 132792830 170415610 259360586 265585660 340831220 518721172 648401465 942829093 1209950831 1296802930 1885658186 2419901662 2593605860 3771316372 4714145465 4839803324 6049754155 9428290930 12099508310 18856581860 20330582273 24199016620 40661164546 81322329092 101652911365 203305822730 406611645460 1443471341383 2886942682766 5773885365532 7217356706915 14434713413830 28869426827660