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28107523027 = 140269200383
BaseRepresentation
bin11010001011010101…
…101100001111010011
32200112212021010000101
4122023111230033103
5430031011214102
620525025433231
72013350001163
oct321325541723
980485233011
1028107523027
1110a13a67081
12554519b817
13285c29683c
141508d7c5a3
15ae7904e87
hex68b56c3d3

28107523027 has 4 divisors (see below), whose sum is σ = 28107863680. Its totient is φ = 28107182376.

The previous prime is 28107523001. The next prime is 28107523043. The reversal of 28107523027 is 72032570182.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-28107523027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28107523127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40078 + ... + 240460.

It is an arithmetic number, because the mean of its divisors is an integer number (7026965920).

Almost surely, 228107523027 is an apocalyptic number.

28107523027 is a deficient number, since it is larger than the sum of its proper divisors (340653).

28107523027 is a wasteful number, since it uses less digits than its factorization.

28107523027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340652.

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 28107523027 in words is "twenty-eight billion, one hundred seven million, five hundred twenty-three thousand, twenty-seven".

Divisors: 1 140269 200383 28107523027