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BaseRepresentation
bin10011110010111010
311010020001
4103302322
510043312
61423214
7455251
oct236272
9133201
1081082
1155a11
123ab0a
132aba1
1421798
1519057
hex13cba

81082 has 8 divisors (see below), whose sum is σ = 123552. Its totient is φ = 39900.

The previous prime is 81077. The next prime is 81083. The reversal of 81082 is 28018.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (81083) 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, 144 + ... + 427.

It is an arithmetic number, because the mean of its divisors is an integer number (15444).

281082 is an apocalyptic number.

81082 is a deficient number, since it is larger than the sum of its proper divisors (42470).

81082 is a wasteful number, since it uses less digits than its factorization.

81082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 81082 is about 284.7490122898. The cubic root of 81082 is about 43.2820827363.

The spelling of 81082 in words is "eighty-one thousand, eighty-two".

Divisors: 1 2 71 142 571 1142 40541 81082