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19028085 = 356411979
BaseRepresentation
bin100100010010…
…1100001110101
31022210201121220
41020211201311
514332344320
61515500553
7320510316
oct110454165
938721556
1019028085
11a81709a
126457759
133c32c2b
14275460d
151a0ce40
hex1225875

19028085 has 16 divisors (see below), whose sum is σ = 30507840. Its totient is φ = 10127360.

The previous prime is 19028069. The next prime is 19028099. The reversal of 19028085 is 58082091.

It is a happy number.

It is not a de Polignac number, because 19028085 - 24 = 19028069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8626 + ... + 10604.

It is an arithmetic number, because the mean of its divisors is an integer number (1906740).

Almost surely, 219028085 is an apocalyptic number.

19028085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19028085 is a deficient number, since it is larger than the sum of its proper divisors (11479755).

19028085 is a wasteful number, since it uses less digits than its factorization.

19028085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 19028085 is about 4362.1193243652. The cubic root of 19028085 is about 266.9715774427.

The spelling of 19028085 in words is "nineteen million, twenty-eight thousand, eighty-five".

Divisors: 1 3 5 15 641 1923 1979 3205 5937 9615 9895 29685 1268539 3805617 6342695 19028085