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28030055053 = 7111359347221
BaseRepresentation
bin11010000110101110…
…001011001010001101
32200100110111022221011
4122012232023022031
5424401143230203
620513221205221
72011416352060
oct320656131215
980313438834
1028030055053
1110984265260
125523260811
132849211ac0
1414dc9748d7
15ae0c0176d
hex686b8b28d

28030055053 has 32 divisors (see below), whose sum is σ = 37699022592. Its totient is φ = 20127052800.

The previous prime is 28030055041. The next prime is 28030055059. The reversal of 28030055053 is 35055003082.

It is a cyclic number.

It is not a de Polignac number, because 28030055053 - 25 = 28030055021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28030055059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 569983 + ... + 617203.

It is an arithmetic number, because the mean of its divisors is an integer number (1178094456).

Almost surely, 228030055053 is an apocalyptic number.

It is an amenable number.

28030055053 is a deficient number, since it is larger than the sum of its proper divisors (9668967539).

28030055053 is a wasteful number, since it uses less digits than its factorization.

28030055053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47845.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 28030055053 in words is "twenty-eight billion, thirty million, fifty-five thousand, fifty-three".

Divisors: 1 7 11 13 77 91 143 593 1001 4151 6523 7709 45661 47221 53963 84799 330547 519431 593593 613873 3636017 4297111 6752603 28002053 47268221 196014371 308022583 364026689 2156158081 2548186823 4004293579 28030055053