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28075541274560 = 2651331217707361
BaseRepresentation
bin1100110001000110110001…
…01010100001111111000000
310200101222212202002021001202
412120203120222201333000
512134442202031241220
6135413420421520332
75625251041206203
oct630433052417700
9120358782067052
1028075541274560
118a4485213799a
123195289b730a8
131288687357c10
146d0c1343193a
1533a498b31275
hex1988d8aa1fc0

28075541274560 has 112 divisors (see below), whose sum is σ = 74320068410112. Its totient is φ = 10031955148800.

The previous prime is 28075541274503. The next prime is 28075541274563. The reversal of 28075541274560 is 6547214557082.

It is a junction number, because it is equal to n+sod(n) for n = 28075541274496 and 28075541274505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28075541274563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108724721 + ... + 108982640.

It is an arithmetic number, because the mean of its divisors is an integer number (663572039376).

Almost surely, 228075541274560 is an apocalyptic number.

28075541274560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28075541274560 is an abundant number, since it is smaller than the sum of its proper divisors (46244527135552).

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

28075541274560 is a wasteful number, since it uses less digits than its factorization.

28075541274560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217707422 (or 217707412 counting only the distinct ones).

The product of its (nonzero) digits is 18816000, while the sum is 56.

The spelling of 28075541274560 in words is "twenty-eight trillion, seventy-five billion, five hundred forty-one million, two hundred seventy-four thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 13 16 20 26 31 32 40 52 62 64 65 80 104 124 130 155 160 208 248 260 310 320 403 416 496 520 620 806 832 992 1040 1240 1612 1984 2015 2080 2480 3224 4030 4160 4960 6448 8060 9920 12896 16120 25792 32240 64480 128960 217707361 435414722 870829444 1088536805 1741658888 2177073610 2830195693 3483317776 4354147220 5660391386 6748928191 6966635552 8708294440 11320782772 13497856382 13933271104 14150978465 17416588880 22641565544 26995712764 28301956930 33744640955 34833177760 45283131088 53991425528 56603913860 67489281910 69666355520 87736066483 90566262176 107982851056 113207827720 134978563820 175472132966 181132524352 215965702112 226415655440 269957127640 350944265932 431931404224 438680332415 452831310880 539914255280 701888531864 877360664830 905662621760 1079828510560 1403777063728 1754721329660 2159657021120 2807554127456 3509442659320 5615108254912 7018885318640 14037770637280 28075541274560