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2800005005028 = 2237113083982909
BaseRepresentation
bin101000101111101101010…
…011011011111011100100
3100220200022011101212120010
4220233231103123323210
5331333402240130103
65542145440410220
7406202506564020
oct50575523337344
910820264355503
102800005005028
1198a525913970
123927b0016970
13174068573baa
1499741759380
154cc7b95c903
hex28bed4dbee4

2800005005028 has 96 divisors (see below), whose sum is σ = 8148119454720. Its totient is φ = 727037389440.

The previous prime is 2800005004999. The next prime is 2800005005099. The reversal of 2800005005028 is 8205005000082.

It is a junction number, because it is equal to n+sod(n) for n = 2800005004986 and 2800005005004.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2357238 + ... + 3340146.

It is an arithmetic number, because the mean of its divisors is an integer number (84876244320).

Almost surely, 22800005005028 is an apocalyptic number.

2800005005028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2800005005028 is an abundant number, since it is smaller than the sum of its proper divisors (5348114449692).

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

2800005005028 is a wasteful number, since it uses less digits than its factorization.

2800005005028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986017 (or 986015 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The spelling of 2800005005028 in words is "two trillion, eight hundred billion, five million, five thousand, twenty-eight".

Divisors: 1 2 3 4 6 7 11 12 14 21 22 28 33 42 44 66 77 84 132 154 231 308 462 924 3083 6166 9249 12332 18498 21581 33913 36996 43162 64743 67826 86324 101739 129486 135652 203478 237391 258972 406956 474782 712173 949564 982909 1424346 1965818 2848692 2948727 3931636 5897454 6880363 10811999 11794908 13760726 20641089 21623998 27521452 32435997 41282178 43247996 64871994 75683993 82564356 129743988 151367986 227051979 302735972 454103958 908207916 3030308447 6060616894 9090925341 12121233788 18181850682 21212159129 33333392917 36363701364 42424318258 63636477387 66666785834 84848636516 100000178751 127272954774 133333571668 200000357502 233333750419 254545909548 400000715004 466667500838 700001251257 933335001676 1400002502514 2800005005028