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82801085 = 579209623
BaseRepresentation
bin1001110111101…
…11000110111101
312202210201201212
410323313012331
5132144113320
612114414205
72023540403
oct473670675
9182721655
1082801085
1142814754
1223891365
1314201333
14add5473
1574089c5
hex4ef71bd

82801085 has 8 divisors (see below), whose sum is σ = 100619520. Its totient is φ = 65402064.

The previous prime is 82801063. The next prime is 82801109. The reversal of 82801085 is 58010828.

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

It is a cyclic number.

It is not a de Polignac number, because 82801085 - 26 = 82801021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104417 + ... + 105206.

It is an arithmetic number, because the mean of its divisors is an integer number (12577440).

Almost surely, 282801085 is an apocalyptic number.

It is an amenable number.

82801085 is a deficient number, since it is larger than the sum of its proper divisors (17818435).

82801085 is a wasteful number, since it uses less digits than its factorization.

82801085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209707.

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 82801085 is about 9099.5101516510. The cubic root of 82801085 is about 435.8583220194.

The spelling of 82801085 in words is "eighty-two million, eight hundred one thousand, eighty-five".

Divisors: 1 5 79 395 209623 1048115 16560217 82801085