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28163054760 = 23351719726601
BaseRepresentation
bin11010001110101001…
…100001110010101000
32200200201202102020020
4122032221201302220
5430134220223020
620534332000440
72014623005241
oct321651416250
980621672206
1028163054760
1110a42345975
12555b900120
13286a93aa59
1415124b5cc8
15aec723c40
hex68ea61ca8

28163054760 has 128 divisors (see below), whose sum is σ = 94167619200. Its totient is φ = 6696345600.

The previous prime is 28163054683. The next prime is 28163054761. The reversal of 28163054760 is 6745036182.

It is not an unprimeable number, because it can be changed into a prime (28163054761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324541 + ... + 402060.

It is an arithmetic number, because the mean of its divisors is an integer number (735684525).

Almost surely, 228163054760 is an apocalyptic number.

28163054760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28163054760 is an abundant number, since it is smaller than the sum of its proper divisors (66004564440).

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

28163054760 is a wasteful number, since it uses less digits than its factorization.

28163054760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726651 (or 726647 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 28163054760 in words is "twenty-eight billion, one hundred sixty-three million, fifty-four thousand, seven hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 17 19 20 24 30 34 38 40 51 57 60 68 76 85 95 102 114 120 136 152 170 190 204 228 255 285 323 340 380 408 456 510 570 646 680 760 969 1020 1140 1292 1615 1938 2040 2280 2584 3230 3876 4845 6460 7752 9690 12920 19380 38760 726601 1453202 2179803 2906404 3633005 4359606 5812808 7266010 8719212 10899015 12352217 13805419 14532020 17438424 21798030 24704434 27610838 29064040 37056651 41416257 43596060 49408868 55221676 61761085 69027095 74113302 82832514 87192120 98817736 110443352 123522170 138054190 148226604 165665028 185283255 207081285 234692123 247044340 276108380 296453208 331330056 370566510 414162570 469384246 494088680 552216760 704076369 741133020 828325140 938768492 1173460615 1408152738 1482266040 1656650280 1877536984 2346921230 2816305476 3520381845 4693842460 5632610952 7040763690 9387684920 14081527380 28163054760