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82386085 = 516477217
BaseRepresentation
bin1001110100100…
…01110010100101
312202000122110111
410322101302211
5132042323320
612101453021
72020161445
oct472216245
9182018414
1082386085
1142560981
1223711171
13140b7482
14ad28125
157375a5a
hex4e91ca5

82386085 has 4 divisors (see below), whose sum is σ = 98863308. Its totient is φ = 65908864.

The previous prime is 82386067. The next prime is 82386089. The reversal of 82386085 is 58068328.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16305444 + 66080641 = 4038^2 + 8129^2 .

It is a cyclic number.

It is not a de Polignac number, because 82386085 - 29 = 82385573 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82386089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8238604 + ... + 8238613.

It is an arithmetic number, because the mean of its divisors is an integer number (24715827).

Almost surely, 282386085 is an apocalyptic number.

It is an amenable number.

82386085 is a deficient number, since it is larger than the sum of its proper divisors (16477223).

82386085 is a wasteful number, since it uses less digits than its factorization.

82386085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16477222.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 82386085 is about 9076.6780817654. The cubic root of 82386085 is about 435.1289264211.

The spelling of 82386085 in words is "eighty-two million, three hundred eighty-six thousand, eighty-five".

Divisors: 1 5 16477217 82386085