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19127 = 31617
BaseRepresentation
bin100101010110111
3222020102
410222313
51103002
6224315
7106523
oct45267
928212
1019127
1113409
12b09b
138924
146d83
155a02
hex4ab7

19127 has 4 divisors (see below), whose sum is σ = 19776. Its totient is φ = 18480.

The previous prime is 19121. The next prime is 19139. The reversal of 19127 is 72191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72191 = 710313.

It is a cyclic number.

It is not a de Polignac number, because 19127 - 212 = 15031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19099 and 19108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278 + ... + 339.

It is an arithmetic number, because the mean of its divisors is an integer number (4944).

219127 is an apocalyptic number.

19127 is a deficient number, since it is larger than the sum of its proper divisors (649).

19127 is an equidigital number, since it uses as much as digits as its factorization.

19127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its digits is 126, while the sum is 20.

The square root of 19127 is about 138.3003976856. The cubic root of 19127 is about 26.7433383709.

The spelling of 19127 in words is "nineteen thousand, one hundred twenty-seven".

Divisors: 1 31 617 19127