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28085483686 = 2132419198313
BaseRepresentation
bin11010001010000001…
…100111100010100110
32200111022210101201111
4122022001213202212
5430004340434221
620522521215234
72012661446431
oct321201474246
980438711644
1028085483686
1110a02583647
12553993151a
13285784b100
141506082818
15ae59eebe1
hex68a0678a6

28085483686 has 24 divisors (see below), whose sum is σ = 45727242120. Its totient is φ = 12931528896.

The previous prime is 28085483681. The next prime is 28085483729. The reversal of 28085483686 is 68638458082.

It is a self number, because there is not a number n which added to its sum of digits gives 28085483686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28085483681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42466 + ... + 240778.

It is an arithmetic number, because the mean of its divisors is an integer number (1905301755).

Almost surely, 228085483686 is an apocalyptic number.

28085483686 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28085483686 is a deficient number, since it is larger than the sum of its proper divisors (17641758434).

28085483686 is a wasteful number, since it uses less digits than its factorization.

28085483686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198760 (or 198747 counting only the distinct ones).

The product of its (nonzero) digits is 17694720, while the sum is 58.

The spelling of 28085483686 in words is "twenty-eight billion, eighty-five million, four hundred eighty-three thousand, six hundred eighty-six".

Divisors: 1 2 13 26 169 338 419 838 5447 10894 70811 141622 198313 396626 2578069 5156138 33514897 67029794 83093147 166186294 1080210911 2160421822 14042741843 28085483686