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28838492376925 = 52711171201733753
BaseRepresentation
bin1101000111010011111000…
…00110000000111101011101
310210002221012010011222221111
412203221330012000331131
512234442213022030200
6141200115343502021
76034340503446340
oct643517406007535
9123087163158844
1028838492376925
119209377146520
1232991148b7911
1313125c5775b4a
14719b0d104457
1535024e5720ba
hex1a3a7c180f5d

28838492376925 has 96 divisors (see below), whose sum is σ = 47245492594944. Its totient is φ = 16905646080000.

The previous prime is 28838492376923. The next prime is 28838492376971. The reversal of 28838492376925 is 52967329483882.

It is not a de Polignac number, because 28838492376925 - 21 = 28838492376923 is a prime.

It is a super-2 number, since 2×288384923769252 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28838492376923) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 38935849 + ... + 39669601.

It is an arithmetic number, because the mean of its divisors is an integer number (492140547864).

Almost surely, 228838492376925 is an apocalyptic number.

28838492376925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28838492376925 is a deficient number, since it is larger than the sum of its proper divisors (18407000218019).

28838492376925 is a wasteful number, since it uses less digits than its factorization.

28838492376925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734999 (or 734994 counting only the distinct ones).

The product of its digits is 2508226560, while the sum is 76.

The spelling of 28838492376925 in words is "twenty-eight trillion, eight hundred thirty-eight billion, four hundred ninety-two million, three hundred seventy-six thousand, nine hundred twenty-five".

Divisors: 1 5 7 11 17 25 35 55 77 85 119 175 187 275 385 425 595 935 1201 1309 1925 2975 4675 6005 6545 8407 13211 20417 30025 32725 42035 66055 92477 102085 142919 210175 224587 330275 462385 510425 714595 733753 1122935 1572109 2311925 3572975 3668765 5136271 5614675 7860545 8071283 12473801 18343825 25681355 39302725 40356415 56498981 62369005 87316607 128406775 137211811 201782075 282494905 311845025 436583035 686059055 881237353 960482677 1412474525 2182915175 3430295275 4406186765 4802413385 6168661471 9693610883 14981035001 22030933825 24012066925 30843307355 48468054415 67855276181 74905175005 104867245007 154216536775 164791385011 242340272075 339276380905 374525875025 524336225035 823956925055 1153539695077 1696381904525 2621681125175 4119784625275 5767698475385 28838492376925