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82106843 = 7133072939
BaseRepresentation
bin1001110010011…
…01100111011011
312201111110102012
410321031213123
5132004404333
612051500135
72014616360
oct471154733
9181443365
1082106843
11423900a5
12235b764b
131401a340
14ac94467
15731ce48
hex4e4d9db

82106843 has 16 divisors (see below), whose sum is σ = 101418240. Its totient is φ = 64730016.

The previous prime is 82106831. The next prime is 82106851. The reversal of 82106843 is 34860128.

It is not a de Polignac number, because 82106843 - 26 = 82106779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82106863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26468 + ... + 29406.

It is an arithmetic number, because the mean of its divisors is an integer number (6338640).

Almost surely, 282106843 is an apocalyptic number.

82106843 is a deficient number, since it is larger than the sum of its proper divisors (19311397).

82106843 is a wasteful number, since it uses less digits than its factorization.

82106843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 82106843 is about 9061.2826354772. The cubic root of 82106843 is about 434.6367566985.

The spelling of 82106843 in words is "eighty-two million, one hundred six thousand, eight hundred forty-three".

Divisors: 1 7 13 91 307 2149 2939 3991 20573 27937 38207 267449 902273 6315911 11729549 82106843