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28037428127 = 48757571721
BaseRepresentation
bin11010000111001010…
…010011001110011111
32200100222100220212222
4122013022103032133
5424410040200002
620514043215555
72011536130652
oct320712231637
980328326788
1028037428127
1110988440805
1255258175bb
13284a8c3a77
1414dd933899
15ae16ab1a2
hex68729339f

28037428127 has 4 divisors (see below), whose sum is σ = 28095000336. Its totient is φ = 27979855920.

The previous prime is 28037428103. The next prime is 28037428141. The reversal of 28037428127 is 72182473082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28037428127 - 230 = 26963686303 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 (28037424127) 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, 28785374 + ... + 28786347.

It is an arithmetic number, because the mean of its divisors is an integer number (7023750084).

Almost surely, 228037428127 is an apocalyptic number.

28037428127 is a deficient number, since it is larger than the sum of its proper divisors (57572209).

28037428127 is an equidigital number, since it uses as much as digits as its factorization.

28037428127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57572208.

The product of its (nonzero) digits is 301056, while the sum is 44.

The spelling of 28037428127 in words is "twenty-eight billion, thirty-seven million, four hundred twenty-eight thousand, one hundred twenty-seven".

Divisors: 1 487 57571721 28037428127