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85127805 = 3257535099
BaseRepresentation
bin1010001001011…
…11001001111101
312221011221101200
411010233021331
5133243042210
612240330113
72052401010
oct504571175
9187157350
1085127805
1144063864
1224613939
13148373a9
14b43d377
1577180c0
hex512f27d

85127805 has 48 divisors (see below), whose sum is σ = 171849600. Its totient is φ = 38173824.

The previous prime is 85127803. The next prime is 85127813. The reversal of 85127805 is 50872158.

It is not a de Polignac number, because 85127805 - 21 = 85127803 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85127805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85127803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14146 + ... + 19244.

It is an arithmetic number, because the mean of its divisors is an integer number (3580200).

Almost surely, 285127805 is an apocalyptic number.

It is an amenable number.

85127805 is an abundant number, since it is smaller than the sum of its proper divisors (86721795).

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

85127805 is a wasteful number, since it uses less digits than its factorization.

85127805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5170 (or 5167 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 85127805 is about 9226.4730531227. The cubic root of 85127805 is about 439.9032242396.

The spelling of 85127805 in words is "eighty-five million, one hundred twenty-seven thousand, eight hundred five".

Divisors: 1 3 5 7 9 15 21 35 45 53 63 105 159 265 315 371 477 795 1113 1855 2385 3339 5099 5565 15297 16695 25495 35693 45891 76485 107079 178465 229455 270247 321237 535395 810741 1351235 1606185 1891729 2432223 4053705 5675187 9458645 12161115 17025561 28375935 85127805