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20041875 = 32547509
BaseRepresentation
bin100110001110…
…1000010010011
31101201020021200
41030131002103
520112320000
61553322243
7332232060
oct114350223
941636250
1020041875
1110349837
126866383
1341c94c9
142939c67
151b5d500
hex131d093

20041875 has 60 divisors (see below), whose sum is σ = 41424240. Its totient is φ = 9144000.

The previous prime is 20041873. The next prime is 20041891. The reversal of 20041875 is 57814002.

It is not a de Polignac number, because 20041875 - 21 = 20041873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20041873) by changing a digit.

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 59 ways as a sum of consecutive naturals, for example, 39121 + ... + 39629.

It is an arithmetic number, because the mean of its divisors is an integer number (690404).

Almost surely, 220041875 is an apocalyptic number.

20041875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20041875 is an abundant number, since it is smaller than the sum of its proper divisors (21382365).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20041875 is an equidigital number, since it uses as much as digits as its factorization.

20041875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 20041875 is about 4476.8152742770. The cubic root of 20041875 is about 271.6310733266.

Adding to 20041875 its reverse (57814002), we get a palindrome (77855877).

The spelling of 20041875 in words is "twenty million, forty-one thousand, eight hundred seventy-five".

Divisors: 1 3 5 7 9 15 21 25 35 45 63 75 105 125 175 225 315 375 509 525 625 875 1125 1527 1575 1875 2545 2625 3563 4375 4581 5625 7635 7875 10689 12725 13125 17815 22905 32067 38175 39375 53445 63625 89075 114525 160335 190875 267225 318125 445375 572625 801675 954375 1336125 2226875 2863125 4008375 6680625 20041875