Search a number
-
+
230305824 = 25327711609
BaseRepresentation
bin11011011101000…
…11000000100000
3121001100202012100
431232203000200
5432424241244
634504130400
75464365360
oct1556430040
9531322170
10230305824
111090021a1
1265166a00
1338938548
14228309a0
1515343b69
hexdba3020

230305824 has 144 divisors (see below), whose sum is σ = 759507840. Its totient is φ = 64834560.

The previous prime is 230305813. The next prime is 230305843. The reversal of 230305824 is 428503032.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142332 + ... + 143940.

It is an arithmetic number, because the mean of its divisors is an integer number (5274360).

Almost surely, 2230305824 is an apocalyptic number.

230305824 is a gapful number since it is divisible by the number (24) 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 230305824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379753920).

230305824 is an abundant number, since it is smaller than the sum of its proper divisors (529202016).

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

230305824 is a wasteful number, since it uses less digits than its factorization.

230305824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703 (or 1692 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 230305824 is about 15175.8302573533. The cubic root of 230305824 is about 612.9640068035.

Adding to 230305824 its reverse (428503032), we get a palindrome (658808856).

The spelling of 230305824 in words is "two hundred thirty million, three hundred five thousand, eight hundred twenty-four".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 71 72 84 96 112 126 142 144 168 213 224 252 284 288 336 426 497 504 568 639 672 852 994 1008 1136 1278 1491 1609 1704 1988 2016 2272 2556 2982 3218 3408 3976 4473 4827 5112 5964 6436 6816 7952 8946 9654 10224 11263 11928 12872 14481 15904 17892 19308 20448 22526 23856 25744 28962 33789 35784 38616 45052 47712 51488 57924 67578 71568 77232 90104 101367 114239 115848 135156 143136 154464 180208 202734 228478 231696 270312 342717 360416 405468 456956 463392 540624 685434 799673 810936 913912 1028151 1081248 1370868 1599346 1621872 1827824 2056302 2399019 2741736 3198692 3243744 3655648 4112604 4798038 5483472 6397384 7197057 8225208 9596076 10966944 12794768 14394114 16450416 19192152 25589536 28788228 32900832 38384304 57576456 76768608 115152912 230305824