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285695190 = 2325112312547
BaseRepresentation
bin10001000001110…
…101110011010110
3201220120211010100
4101001311303112
51041114221230
644203234530
710036240404
oct2101656326
9656524110
10285695190
111372a4030
127b818a46
134725ca11
1429d2c474
151a135660
hex11075cd6

285695190 has 96 divisors (see below), whose sum is σ = 845634816. Its totient is φ = 66242880.

The previous prime is 285695173. The next prime is 285695219. The reversal of 285695190 is 91596582.

Together with 559939625 it forms a betrothed pair.

It is a super-2 number, since 2×2856951902 = 163243483178272200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16497 + ... + 29043.

It is an arithmetic number, because the mean of its divisors is an integer number (8808696).

Almost surely, 2285695190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285695190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422817408).

285695190 is an abundant number, since it is smaller than the sum of its proper divisors (559939626).

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

285695190 is a wasteful number, since it uses less digits than its factorization.

285695190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12594 (or 12591 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 285695190 is about 16902.5202262858. The cubic root of 285695190 is about 658.6190824191.

The spelling of 285695190 in words is "two hundred eighty-five million, six hundred ninety-five thousand, one hundred ninety".

Divisors: 1 2 3 5 6 9 10 11 15 18 22 23 30 33 45 46 55 66 69 90 99 110 115 138 165 198 207 230 253 330 345 414 495 506 690 759 990 1035 1265 1518 2070 2277 2530 3795 4554 7590 11385 12547 22770 25094 37641 62735 75282 112923 125470 138017 188205 225846 276034 288581 376410 414051 564615 577162 690085 828102 865743 1129230 1242153 1380170 1442905 1731486 2070255 2484306 2597229 2885810 3174391 4140510 4328715 5194458 6210765 6348782 8657430 9523173 12421530 12986145 15871955 19046346 25972290 28569519 31743910 47615865 57139038 95231730 142847595 285695190