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82108000 = 2553131579
BaseRepresentation
bin1001110010011…
…01111001100000
312201111112000001
410321031321200
5132004424000
612051505344
72014622632
oct471157140
9181445001
1082108000
1142390a57
12235b8254
131401aa20
14ac94a52
15731d46a
hex4e4de60

82108000 has 96 divisors (see below), whose sum is σ = 217395360. Its totient is φ = 30297600.

The previous prime is 82107983. The next prime is 82108001. The reversal of 82108000 is 80128.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82108001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51211 + ... + 52789.

It is an arithmetic number, because the mean of its divisors is an integer number (2264535).

Almost surely, 282108000 is an apocalyptic number.

82108000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82108000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108697680).

82108000 is an abundant number, since it is smaller than the sum of its proper divisors (135287360).

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

82108000 is a wasteful number, since it uses less digits than its factorization.

82108000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617 (or 1599 counting only the distinct ones).

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

The square root of 82108000 is about 9061.3464783110. The cubic root of 82108000 is about 434.6387982350.

Adding to 82108000 its reverse (80128), we get a palindrome (82188128).

The spelling of 82108000 in words is "eighty-two million, one hundred eight thousand".

Divisors: 1 2 4 5 8 10 13 16 20 25 26 32 40 50 52 65 80 100 104 125 130 160 200 208 250 260 325 400 416 500 520 650 800 1000 1040 1300 1579 1625 2000 2080 2600 3158 3250 4000 5200 6316 6500 7895 10400 12632 13000 15790 20527 25264 26000 31580 39475 41054 50528 52000 63160 78950 82108 102635 126320 157900 164216 197375 205270 252640 315800 328432 394750 410540 513175 631600 656864 789500 821080 1026350 1263200 1579000 1642160 2052700 2565875 3158000 3284320 4105400 5131750 6316000 8210800 10263500 16421600 20527000 41054000 82108000