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82108190 = 258210819
BaseRepresentation
bin1001110010011…
…01111100011110
312201111112021002
410321031330132
5132004430230
612051510302
72014623323
oct471157436
9181445232
1082108190
114239110a
12235b8392
131401ab38
14ac94b4a
15731d545
hex4e4df1e

82108190 has 8 divisors (see below), whose sum is σ = 147794760. Its totient is φ = 32843272.

The previous prime is 82108189. The next prime is 82108207. The reversal of 82108190 is 9180128.

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

It is a super-2 number, since 2×821081902 = 13483509730152200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4105400 + ... + 4105419.

It is an arithmetic number, because the mean of its divisors is an integer number (18474345).

Almost surely, 282108190 is an apocalyptic number.

82108190 is a deficient number, since it is larger than the sum of its proper divisors (65686570).

82108190 is a wasteful number, since it uses less digits than its factorization.

82108190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8210826.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 82108190 is about 9061.3569623981. The cubic root of 82108190 is about 434.6391334898.

The spelling of 82108190 in words is "eighty-two million, one hundred eight thousand, one hundred ninety".

Divisors: 1 2 5 10 8210819 16421638 41054095 82108190