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83065842 = 23217353769
BaseRepresentation
bin1001111001101…
…11101111110010
312210022011220200
410330313233302
5132231101332
612124220030
72026022316
oct474675762
9183264820
1083065842
1142985662
122399a616
13142949b2
14b063b46
15745c17c
hex4f37bf2

83065842 has 48 divisors (see below), whose sum is σ = 191351160. Its totient is φ = 25952256.

The previous prime is 83065841. The next prime is 83065867. The reversal of 83065842 is 24856038.

It can be written as a sum of positive squares in 4 ways, for example, as 73462041 + 9603801 = 8571^2 + 3099^2 .

It is a junction number, because it is equal to n+sod(n) for n = 83065797 and 83065806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83065841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107634 + ... + 108402.

Almost surely, 283065842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83065842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95675580).

83065842 is an abundant number, since it is smaller than the sum of its proper divisors (108285318).

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

83065842 is a wasteful number, since it uses less digits than its factorization.

83065842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147 (or 1144 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 83065842 is about 9114.0464119951. The cubic root of 83065842 is about 436.3223810192.

The spelling of 83065842 in words is "eighty-three million, sixty-five thousand, eight hundred forty-two".

Divisors: 1 2 3 6 9 17 18 34 51 102 153 306 353 706 769 1059 1538 2118 2307 3177 4614 6001 6354 6921 12002 13073 13842 18003 26146 36006 39219 54009 78438 108018 117657 235314 271457 542914 814371 1628742 2443113 4614769 4886226 9229538 13844307 27688614 41532921 83065842