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85808236 = 22121717627
BaseRepresentation
bin1010001110101…
…01010001101100
312222110111202211
411013111101230
5133431330421
612303100204
72061233533
oct507252154
9188414684
1085808236
1144488aa8
12248a1664
1314a15007
14b57931a
1577ee9e1
hex51d546c

85808236 has 12 divisors (see below), whose sum is σ = 150296328. Its totient is φ = 42866432.

The previous prime is 85808227. The next prime is 85808249. The reversal of 85808236 is 63280858.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3946 + ... + 13681.

It is an arithmetic number, because the mean of its divisors is an integer number (12524694).

Almost surely, 285808236 is an apocalyptic number.

It is an amenable number.

85808236 is a deficient number, since it is larger than the sum of its proper divisors (64488092).

85808236 is a wasteful number, since it uses less digits than its factorization.

85808236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18848 (or 18846 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 85808236 is about 9263.2735034652. The cubic root of 85808236 is about 441.0721717604.

The spelling of 85808236 in words is "eighty-five million, eight hundred eight thousand, two hundred thirty-six".

Divisors: 1 2 4 1217 2434 4868 17627 35254 70508 21452059 42904118 85808236