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8085285 = 3351317271
BaseRepresentation
bin11110110101111100100101
3120012202221000
4132311330211
54032212120
6445143513
7125503155
oct36657445
916182830
108085285
11462265a
12285ab99
1318a11c0
141106765
15a9a990
hex7b5f25

8085285 has 64 divisors (see below), whose sum is σ = 16450560. Its totient is φ = 3732480.

The previous prime is 8085281. The next prime is 8085307. The reversal of 8085285 is 5825808.

It is not a de Polignac number, because 8085285 - 22 = 8085281 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8085281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29700 + ... + 29970.

It is an arithmetic number, because the mean of its divisors is an integer number (257040).

Almost surely, 28085285 is an apocalyptic number.

8085285 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8085285 is an abundant number, since it is smaller than the sum of its proper divisors (8365275).

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

8085285 is a wasteful number, since it uses less digits than its factorization.

8085285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 8085285 is about 2843.4635570023. The cubic root of 8085285 is about 200.7081976538.

The spelling of 8085285 in words is "eight million, eighty-five thousand, two hundred eighty-five".

Divisors: 1 3 5 9 13 15 17 27 39 45 51 65 85 117 135 153 195 221 255 271 351 459 585 663 765 813 1105 1355 1755 1989 2295 2439 3315 3523 4065 4607 5967 7317 9945 10569 12195 13821 17615 23035 29835 31707 36585 41463 52845 59891 69105 95121 124389 158535 179673 207315 299455 475605 539019 621945 898365 1617057 2695095 8085285