Search a number
-
+
285313230 = 23254996353
BaseRepresentation
bin10001000000011…
…000100011001110
3201212212102011200
4101000120203032
51041020010410
644151130330
710033056666
oct2100304316
9655772150
10285313230
11137063064
127b6739a6
1347157bc7
1429c6d1a6
151a0ac3c0
hex110188ce

285313230 has 48 divisors (see below), whose sum is σ = 743418000. Its totient is φ = 75919104.

The previous prime is 285313211. The next prime is 285313241. The reversal of 285313230 is 32313582.

It is a junction number, because it is equal to n+sod(n) for n = 285313194 and 285313203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41734 + ... + 48086.

It is an arithmetic number, because the mean of its divisors is an integer number (15487875).

Almost surely, 2285313230 is an apocalyptic number.

285313230 is an abundant number, since it is smaller than the sum of its proper divisors (458104770).

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

285313230 is a wasteful number, since it uses less digits than its factorization.

285313230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6865 (or 6862 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 285313230 is about 16891.2175404854. The cubic root of 285313230 is about 658.3254380652.

The spelling of 285313230 in words is "two hundred eighty-five million, three hundred thirteen thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 499 998 1497 2495 2994 4491 4990 6353 7485 8982 12706 14970 19059 22455 31765 38118 44910 57177 63530 95295 114354 190590 285885 571770 3170147 6340294 9510441 15850735 19020882 28531323 31701470 47552205 57062646 95104410 142656615 285313230