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28028286934 = 2181123162897
BaseRepresentation
bin11010000110100111…
…011011011111010110
32200100100011111112021
4122012213123133112
5424400220140214
620513115243354
72011365336154
oct320647333726
980310144467
1028028286934
11109832678aa
12552274955a
132848a4308b
1414dc6343d4
15ae09a2924
hex6869db7d6

28028286934 has 16 divisors (see below), whose sum is σ = 42309723456. Its totient is φ = 13925174400.

The previous prime is 28028286911. The next prime is 28028287099. The reversal of 28028286934 is 43968282082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414174 + ... + 477070.

It is an arithmetic number, because the mean of its divisors is an integer number (2644357716).

Almost surely, 228028286934 is an apocalyptic number.

28028286934 is a deficient number, since it is larger than the sum of its proper divisors (14281436522).

28028286934 is a wasteful number, since it uses less digits than its factorization.

28028286934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64311.

The product of its (nonzero) digits is 2654208, while the sum is 52.

The spelling of 28028286934 in words is "twenty-eight billion, twenty-eight million, two hundred eighty-six thousand, nine hundred thirty-four".

Divisors: 1 2 181 362 1231 2462 62897 125794 222811 445622 11384357 22768714 77426207 154852414 14014143467 28028286934