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82343385 = 345203317
BaseRepresentation
bin1001110100001…
…11010111011001
312201221110220000
410322013113121
5132034442020
612100523213
72016623115
oct472072731
9181843800
1082343385
1142531893
12236b0509
13140a0bc7
14ad16745
157368090
hex4e875d9

82343385 has 20 divisors (see below), whose sum is σ = 147608868. Its totient is φ = 43916256.

The previous prime is 82343363. The next prime is 82343407. The reversal of 82343385 is 58334328.

It is an interprime number because it is at equal distance from previous prime (82343363) and next prime (82343407).

It can be written as a sum of positive squares in 2 ways, for example, as 50296464 + 32046921 = 7092^2 + 5661^2 .

It is not a de Polignac number, because 82343385 - 212 = 82339289 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 101254 + ... + 102063.

Almost surely, 282343385 is an apocalyptic number.

It is an amenable number.

82343385 is a deficient number, since it is larger than the sum of its proper divisors (65265483).

82343385 is a wasteful number, since it uses less digits than its factorization.

82343385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203334 (or 203325 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 82343385 is about 9074.3255947756. The cubic root of 82343385 is about 435.0537389020.

It can be divided in two parts, 82343 and 385, that added together give a palindrome (82728).

The spelling of 82343385 in words is "eighty-two million, three hundred forty-three thousand, three hundred eighty-five".

Divisors: 1 3 5 9 15 27 45 81 135 405 203317 609951 1016585 1829853 3049755 5489559 9149265 16468677 27447795 82343385