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128082 = 2321347
BaseRepresentation
bin11111010001010010
320111200210
4133101102
513044312
62424550
71042263
oct372122
9214623
10128082
1188259
1262156
13463b6
143496a
1527e3c
hex1f452

128082 has 8 divisors (see below), whose sum is σ = 256176. Its totient is φ = 42692.

The previous prime is 128053. The next prime is 128099. The reversal of 128082 is 280821.

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

128082 is an admirable number.

It is an unprimeable number.

128082 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10668 + ... + 10679.

It is an arithmetic number, because the mean of its divisors is an integer number (32022).

2128082 is an apocalyptic number.

128082 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128082 is a wasteful number, since it uses less digits than its factorization.

128082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21352.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 128082 is about 357.8854565360. The cubic root of 128082 is about 50.4076015241.

The spelling of 128082 in words is "one hundred twenty-eight thousand, eighty-two".

Divisors: 1 2 3 6 21347 42694 64041 128082