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28830159173 = 148319440431
BaseRepresentation
bin11010110110011010…
…010101000101000101
32202102020000211110002
4122312122111011011
5433021010043143
621124442211045
72040303211124
oct326632250505
982366024402
1028830159173
1111254967332
1257071b3a85
132945c001aa
141576d29abb
15b3b0995b8
hex6b6695145

28830159173 has 4 divisors (see below), whose sum is σ = 28849601088. Its totient is φ = 28810717260.

The previous prime is 28830159119. The next prime is 28830159179. The reversal of 28830159173 is 37195103882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-28830159173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28830159179) 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 3 ways as a sum of consecutive naturals, for example, 9718733 + ... + 9721698.

It is an arithmetic number, because the mean of its divisors is an integer number (7212400272).

Almost surely, 228830159173 is an apocalyptic number.

It is an amenable number.

28830159173 is a deficient number, since it is larger than the sum of its proper divisors (19441915).

28830159173 is a wasteful number, since it uses less digits than its factorization.

28830159173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19441914.

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 28830159173 in words is "twenty-eight billion, eight hundred thirty million, one hundred fifty-nine thousand, one hundred seventy-three".

Divisors: 1 1483 19440431 28830159173