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82002148 = 22169312109
BaseRepresentation
bin1001110001101…
…00000011100100
312201022010210121
410320310003210
5131443032043
612045331324
72014002214
oct470640344
9181263717
1082002148
1142319478
1223566b44
1313cb17a7
14ac68244
1572ebded
hex4e340e4

82002148 has 12 divisors (see below), whose sum is σ = 143600380. Its totient is φ = 40973472.

The previous prime is 82002143. The next prime is 82002149. The reversal of 82002148 is 84120028.

It can be written as a sum of positive squares in 2 ways, for example, as 64513024 + 17489124 = 8032^2 + 4182^2 .

It is a super-2 number, since 2×820021482 = 13448704553227808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82002143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718 + ... + 12826.

Almost surely, 282002148 is an apocalyptic number.

It is an amenable number.

82002148 is a deficient number, since it is larger than the sum of its proper divisors (61598232).

82002148 is a wasteful number, since it uses less digits than its factorization.

82002148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13806 (or 13804 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 82002148 is about 9055.5037408197. The cubic root of 82002148 is about 434.4519420178.

The spelling of 82002148 in words is "eighty-two million, two thousand, one hundred forty-eight".

Divisors: 1 2 4 1693 3386 6772 12109 24218 48436 20500537 41001074 82002148