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28755090559 = 137507294649
BaseRepresentation
bin11010110001111011…
…111101110001111111
32202012222202221200001
4122301323331301333
5432342300344214
621113201215131
72035402144156
oct326173756177
982188687601
1028755090559
1111216554158
1256a60314a7
1329334a85b0
14156ad8859d
15b346bbc74
hex6b1efdc7f

28755090559 has 8 divisors (see below), whose sum is σ = 30971250800. Its totient is φ = 26539534656.

The previous prime is 28755090541. The next prime is 28755090569. The reversal of 28755090559 is 95509055782.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28755090559 - 25 = 28755090527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28755090569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49734 + ... + 244915.

It is an arithmetic number, because the mean of its divisors is an integer number (3871406350).

Almost surely, 228755090559 is an apocalyptic number.

28755090559 is a deficient number, since it is larger than the sum of its proper divisors (2216160241).

28755090559 is a wasteful number, since it uses less digits than its factorization.

28755090559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302169.

The product of its (nonzero) digits is 5670000, while the sum is 55.

The spelling of 28755090559 in words is "twenty-eight billion, seven hundred fifty-five million, ninety thousand, five hundred fifty-nine".

Divisors: 1 13 7507 97591 294649 3830437 2211930043 28755090559