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82285161 = 3721314273
BaseRepresentation
bin1001110011110…
…01001001101001
312201211112000120
410321321021221
5132031111121
612055353453
72016261300
oct471711151
9181745016
1082285161
11424a2072
1223682889
131408055a
14acdd437
157355bc6
hex4e79269

82285161 has 24 divisors (see below), whose sum is σ = 128630304. Its totient is φ = 46650240.

The previous prime is 82285139. The next prime is 82285163. The reversal of 82285161 is 16158228.

It is not a de Polignac number, because 82285161 - 213 = 82276969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82285163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17121 + ... + 21393.

It is an arithmetic number, because the mean of its divisors is an integer number (5359596).

Almost surely, 282285161 is an apocalyptic number.

It is an amenable number.

82285161 is a deficient number, since it is larger than the sum of its proper divisors (46345143).

82285161 is a wasteful number, since it uses less digits than its factorization.

82285161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4421 (or 4414 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 82285161 is about 9071.1168551618. The cubic root of 82285161 is about 434.9511743323.

The spelling of 82285161 in words is "eighty-two million, two hundred eighty-five thousand, one hundred sixty-one".

Divisors: 1 3 7 21 49 131 147 393 917 2751 4273 6419 12819 19257 29911 89733 209377 559763 628131 1679289 3918341 11755023 27428387 82285161