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6808159040 = 265194326041
BaseRepresentation
bin1100101011100110…
…00100001101000000
3122120110202022110112
412111303010031000
5102420342042130
63043322250452
7330466253114
oct62563041500
918513668415
106808159040
112984034721
1213a0056a28
13846647597
1448829d744
1529ca72495
hex195cc4340

6808159040 has 112 divisors (see below), whose sum is σ = 17462723520. Its totient is φ = 2519838720.

The previous prime is 6808159037. The next prime is 6808159067. The reversal of 6808159040 is 409518086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248420 + ... + 274460.

Almost surely, 26808159040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6808159040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8731361760).

6808159040 is an abundant number, since it is smaller than the sum of its proper divisors (10654564480).

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

6808159040 is a wasteful number, since it uses less digits than its factorization.

6808159040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26120 (or 26110 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 6808159040 is about 82511.5691282138. The cubic root of 6808159040 is about 1895.2938969542.

The spelling of 6808159040 in words is "six billion, eight hundred eight million, one hundred fifty-nine thousand, forty".

Divisors: 1 2 4 5 8 10 16 19 20 32 38 40 43 64 76 80 86 95 152 160 172 190 215 304 320 344 380 430 608 688 760 817 860 1216 1376 1520 1634 1720 2752 3040 3268 3440 4085 6080 6536 6880 8170 13072 13760 16340 26041 26144 32680 52082 52288 65360 104164 130205 130720 208328 260410 261440 416656 494779 520820 833312 989558 1041640 1119763 1666624 1979116 2083280 2239526 2473895 3958232 4166560 4479052 4947790 5598815 7916464 8333120 8958104 9895580 11197630 15832928 17916208 19791160 21275497 22395260 31665856 35832416 39582320 42550994 44790520 71664832 79164640 85101988 89581040 106377485 158329280 170203976 179162080 212754970 340407952 358324160 425509940 680815904 851019880 1361631808 1702039760 3404079520 6808159040