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230740740 = 223255921727
BaseRepresentation
bin11011100000011…
…01001100000100
3121002011211210100
431300031030010
5433032200430
634521324100
75501156346
oct1560151404
9532154710
10230740740
11109279a2a
1265336630
1338a5b4a9
1422905296
15153cc960
hexdc0d304

230740740 has 72 divisors (see below), whose sum is σ = 711809280. Its totient is φ = 60485184.

The previous prime is 230740739. The next prime is 230740753. The reversal of 230740740 is 47047032.

It is a super-3 number, since 3×2307407403 (a number of 26 digits) contains 333 as substring.

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, 244 + ... + 21483.

It is an arithmetic number, because the mean of its divisors is an integer number (9886240).

Almost surely, 2230740740 is an apocalyptic number.

230740740 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 230740740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355904640).

230740740 is an abundant number, since it is smaller than the sum of its proper divisors (481068540).

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

230740740 is a wasteful number, since it uses less digits than its factorization.

230740740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21801 (or 21796 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 230740740 is about 15190.1527312927. The cubic root of 230740740 is about 613.3496103378.

Adding to 230740740 its reverse (47047032), we get a palindrome (277787772).

The spelling of 230740740 in words is "two hundred thirty million, seven hundred forty thousand, seven hundred forty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 59 60 90 118 177 180 236 295 354 531 590 708 885 1062 1180 1770 2124 2655 3540 5310 10620 21727 43454 65181 86908 108635 130362 195543 217270 260724 325905 391086 434540 651810 782172 977715 1281893 1303620 1955430 2563786 3845679 3910860 5127572 6409465 7691358 11537037 12818930 15382716 19228395 23074074 25637860 38456790 46148148 57685185 76913580 115370370 230740740