Search a number
-
+
285241120 = 2554783457
BaseRepresentation
bin10001000000000…
…110111100100000
3201212201202020221
4101000012330200
51041010203440
644145412424
710032336523
oct2100067440
9655652227
10285241120
1113701396a
127b63a114
1347131138
1429c50bba
151a095d4a
hex11006f20

285241120 has 96 divisors (see below), whose sum is σ = 698035968. Its totient is φ = 110082048.

The previous prime is 285241109. The next prime is 285241157. The reversal of 285241120 is 21142582.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623932 + ... + 624388.

It is an arithmetic number, because the mean of its divisors is an integer number (7271208).

Almost surely, 2285241120 is an apocalyptic number.

285241120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285241120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349017984).

285241120 is an abundant number, since it is smaller than the sum of its proper divisors (412794848).

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

285241120 is a wasteful number, since it uses less digits than its factorization.

285241120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 285241120 is about 16889.0828643831. The cubic root of 285241120 is about 658.2699717189.

The spelling of 285241120 in words is "two hundred eighty-five million, two hundred forty-one thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 47 80 83 94 160 166 188 235 332 376 415 457 470 664 752 830 914 940 1328 1504 1660 1828 1880 2285 2656 3320 3656 3760 3901 4570 6640 7312 7520 7802 9140 13280 14624 15604 18280 19505 21479 31208 36560 37931 39010 42958 62416 73120 75862 78020 85916 107395 124832 151724 156040 171832 189655 214790 303448 312080 343664 379310 429580 606896 624160 687328 758620 859160 1213792 1517240 1718320 1782757 3034480 3436640 3565514 6068960 7131028 8913785 14262056 17827570 28524112 35655140 57048224 71310280 142620560 285241120