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82038870 = 23252833221
BaseRepresentation
bin1001110001111…
…01000001010110
312201101000011200
410320331001112
5132000220440
612050213330
72014214244
oct470750126
9181330150
1082038870
1142344021
1223584246
1313cc5414
14ac77794
157307c30
hex4e3d056

82038870 has 48 divisors (see below), whose sum is σ = 214121232. Its totient is φ = 21792960.

The previous prime is 82038841. The next prime is 82038871. The reversal of 82038870 is 7883028.

It is a super-3 number, since 3×820388703 (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82038871) 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 23 ways as a sum of consecutive naturals, for example, 23860 + ... + 27080.

It is an arithmetic number, because the mean of its divisors is an integer number (4460859).

Almost surely, 282038870 is an apocalyptic number.

82038870 is an abundant number, since it is smaller than the sum of its proper divisors (132082362).

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

82038870 is a wasteful number, since it uses less digits than its factorization.

82038870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517 (or 3514 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 82038870 is about 9057.5311205648. The cubic root of 82038870 is about 434.5167840726.

The spelling of 82038870 in words is "eighty-two million, thirty-eight thousand, eight hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 283 566 849 1415 1698 2547 2830 3221 4245 5094 6442 8490 9663 12735 16105 19326 25470 28989 32210 48315 57978 96630 144945 289890 911543 1823086 2734629 4557715 5469258 8203887 9115430 13673145 16407774 27346290 41019435 82038870