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82160189 = 86395203
BaseRepresentation
bin1001110010110…
…10101000111101
312201121011120222
410321122220331
5132013111224
612052551125
72015231036
oct471325075
9181534528
1082160189
1142417191
12236224a5
13140386c7
14aca9a8d
15732db5e
hex4e5aa3d

82160189 has 4 divisors (see below), whose sum is σ = 82256256. Its totient is φ = 82064124.

The previous prime is 82160179. The next prime is 82160203. The reversal of 82160189 is 98106128.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82160189 - 212 = 82156093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82160179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46739 + ... + 48464.

It is an arithmetic number, because the mean of its divisors is an integer number (20564064).

Almost surely, 282160189 is an apocalyptic number.

It is an amenable number.

82160189 is a deficient number, since it is larger than the sum of its proper divisors (96067).

82160189 is an equidigital number, since it uses as much as digits as its factorization.

82160189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96066.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 82160189 is about 9064.2257805066. The cubic root of 82160189 is about 434.7308662429.

The spelling of 82160189 in words is "eighty-two million, one hundred sixty thousand, one hundred eighty-nine".

Divisors: 1 863 95203 82160189