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20444095 = 571971433
BaseRepresentation
bin100110111111…
…1001110111111
31102110200000201
41031333032333
520213202340
62010104331
7335525530
oct115771677
942420021
1020444095
11105a3a51
126a1b0a7
13430a5c9
142a02687
151bdc79a
hex137f3bf

20444095 has 32 divisors (see below), whose sum is σ = 29998080. Its totient is φ = 13063680.

The previous prime is 20444087. The next prime is 20444111. The reversal of 20444095 is 59044402.

It is not a de Polignac number, because 20444095 - 23 = 20444087 is a prime.

It is a super-2 number, since 2×204440952 = 835922040738050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 46999 + ... + 47431.

It is an arithmetic number, because the mean of its divisors is an integer number (937440).

Almost surely, 220444095 is an apocalyptic number.

20444095 is a deficient number, since it is larger than the sum of its proper divisors (9553985).

20444095 is a wasteful number, since it uses less digits than its factorization.

20444095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20444095 is about 4521.5146798390. The cubic root of 20444095 is about 273.4361707364.

Adding to 20444095 its reverse (59044402), we get a palindrome (79488497).

The spelling of 20444095 in words is "twenty million, four hundred forty-four thousand, ninety-five".

Divisors: 1 5 7 19 35 71 95 133 355 433 497 665 1349 2165 2485 3031 6745 8227 9443 15155 30743 41135 47215 57589 153715 215201 287945 584117 1076005 2920585 4088819 20444095