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28083351782 = 266892099219
BaseRepresentation
bin11010001001111001…
…011111000011100110
32200111011210002022002
4122021321133003212
5430003314224112
620522403405302
72012634360113
oct321171370346
980434702262
1028083351782
1110a01357942
125539083832
132857282925
141505a8990a
15ae572d1c2
hex689e5f0e6

28083351782 has 8 divisors (see below), whose sum is σ = 42131345400. Its totient is φ = 14039569984.

The previous prime is 28083351727. The next prime is 28083351787. The reversal of 28083351782 is 28715338082.

It is a happy number.

28083351782 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28083351787) 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, 1036232 + ... + 1062987.

It is an arithmetic number, because the mean of its divisors is an integer number (5266418175).

Almost surely, 228083351782 is an apocalyptic number.

28083351782 is a deficient number, since it is larger than the sum of its proper divisors (14047993618).

28083351782 is a wasteful number, since it uses less digits than its factorization.

28083351782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105910.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 28083351782 in words is "twenty-eight billion, eighty-three million, three hundred fifty-one thousand, seven hundred eighty-two".

Divisors: 1 2 6689 13378 2099219 4198438 14041675891 28083351782