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27868628088 = 23327217464663
BaseRepresentation
bin11001111101000110…
…011000010001111000
32122221012201222202200
4121331012120101320
5424033332044323
620445213230200
72004416300400
oct317506302170
978835658680
1027868628088
1110901128844
125499192360
1328219419a2
1414c5353800
15ad1966443
hex67d198478

27868628088 has 144 divisors (see below), whose sum is σ = 92965326480. Its totient is φ = 7494068736.

The previous prime is 27868628077. The next prime is 27868628113. The reversal of 27868628088 is 88082686872.

27868628088 is a `hidden beast` number, since 278 + 6 + 8 + 6 + 280 + 88 = 666.

It is a super-3 number, since 3×278686280883 (a number of 32 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 172356 + ... + 292307.

It is an arithmetic number, because the mean of its divisors is an integer number (645592545).

Almost surely, 227868628088 is an apocalyptic number.

27868628088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27868628088 is an abundant number, since it is smaller than the sum of its proper divisors (65096698392).

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

27868628088 is a wasteful number, since it uses less digits than its factorization.

27868628088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464706 (or 464692 counting only the distinct ones).

The product of its (nonzero) digits is 33030144, while the sum is 63.

The spelling of 27868628088 in words is "twenty-seven billion, eight hundred sixty-eight million, six hundred twenty-eight thousand, eighty-eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 17 18 21 24 28 34 36 42 49 51 56 63 68 72 84 98 102 119 126 136 147 153 168 196 204 238 252 294 306 357 392 408 441 476 504 588 612 714 833 882 952 1071 1176 1224 1428 1666 1764 2142 2499 2856 3332 3528 4284 4998 6664 7497 8568 9996 14994 19992 29988 59976 464663 929326 1393989 1858652 2787978 3252641 3717304 4181967 5575956 6505282 7899271 8363934 9757923 11151912 13010564 15798542 16727868 19515846 22768487 23697813 26021128 29273769 31597084 33455736 39031692 45536974 47395626 55294897 58547538 63194168 68305461 71093439 78063384 91073948 94791252 110589794 117095076 136610922 142186878 165884691 182147896 189582504 204916383 221179588 234190152 273221844 284373756 331769382 387064279 409832766 442359176 497654073 546443688 568747512 663538764 774128558 819665532 995308146 1161192837 1327077528 1548257116 1639331064 1990616292 2322385674 3096514232 3483578511 3981232584 4644771348 6967157022 9289542696 13934314044 27868628088