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2868830811 = 337119671427
BaseRepresentation
bin1010101011111110…
…1110001001011011
321101221012201001000
42222333232021123
521333410041221
61152401000043
7131043442140
oct25277561133
97357181030
102868830811
111242420060
12680923023
13369479832
141d30203c7
1511bcd3e26
hexaafee25b

2868830811 has 64 divisors (see below), whose sum is σ = 5308047360. Its totient is φ = 1487717280.

The previous prime is 2868830761. The next prime is 2868830819. The reversal of 2868830811 is 1180388682.

It is not a de Polignac number, because 2868830811 - 217 = 2868699739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2868830819) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2009680 + ... + 2011106.

It is an arithmetic number, because the mean of its divisors is an integer number (82938240).

Almost surely, 22868830811 is an apocalyptic number.

2868830811 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2868830811 is a deficient number, since it is larger than the sum of its proper divisors (2439216549).

2868830811 is a wasteful number, since it uses less digits than its factorization.

2868830811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421 (or 2415 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 2868830811 is about 53561.4675956513. The cubic root of 2868830811 is about 1420.9156976481.

The spelling of 2868830811 in words is "two billion, eight hundred sixty-eight million, eight hundred thirty thousand, eight hundred eleven".

Divisors: 1 3 7 9 11 21 27 33 63 77 99 189 231 297 693 967 1427 2079 2901 4281 6769 8703 9989 10637 12843 15697 20307 26109 29967 31911 38529 47091 60921 74459 89901 95733 109879 141273 182763 223377 269703 287199 329637 423819 670131 988911 1379909 2010393 2966733 4139727 9659363 12419181 15178999 28978089 37257543 45536997 86934267 106252993 136610991 260802801 318758979 409832973 956276937 2868830811