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285486768 = 2434731469
BaseRepresentation
bin10001000001000…
…010111010110000
3201220012020020000
4101001002322300
51041041034033
644154550000
710034411640
oct2101027260
9656166200
10285486768
11137171486
127b738300
13471b8ba8
1429cb6520
151a0e3a13
hex11042eb0

285486768 has 100 divisors (see below), whose sum is σ = 944351760. Its totient is φ = 81565056.

The previous prime is 285486767. The next prime is 285486821. The reversal of 285486768 is 867684582.

285486768 is a `hidden beast` number, since 28 + 548 + 6 + 76 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (285486767) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6663 + ... + 24806.

Almost surely, 2285486768 is an apocalyptic number.

285486768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

285486768 is an abundant number, since it is smaller than the sum of its proper divisors (658864992).

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

285486768 is a wasteful number, since it uses less digits than its factorization.

285486768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31496 (or 31481 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The square root of 285486768 is about 16896.3536894799. The cubic root of 285486768 is about 658.4588835946.

The spelling of 285486768 in words is "two hundred eighty-five million, four hundred eighty-six thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 36 42 48 54 56 63 72 81 84 108 112 126 144 162 168 189 216 252 324 336 378 432 504 567 648 756 1008 1134 1296 1512 2268 3024 4536 9072 31469 62938 94407 125876 188814 220283 251752 283221 377628 440566 503504 566442 660849 755256 849663 881132 1132884 1321698 1510512 1699326 1762264 1982547 2265768 2548989 2643396 3398652 3524528 3965094 4531536 5097978 5286792 5947641 6797304 7930188 10195956 10573584 11895282 13594608 15860376 17842923 20391912 23790564 31720752 35685846 40783824 47581128 71371692 95162256 142743384 285486768