Search a number
-
+
230368788640 = 2551489966961
BaseRepresentation
bin1101011010001100001…
…1001100000010100000
3211000121210111222210001
43112203003030002200
512233243402214030
6253455134345344
722433516252254
oct3264303140240
9730553458701
10230368788640
11897761a2631
123879205b254
1318953c183b3
14b2154c8264
155ed4648cca
hex35a30cc0a0

230368788640 has 48 divisors (see below), whose sum is σ = 544612337640. Its totient is φ = 92085534720.

The previous prime is 230368788623. The next prime is 230368788673. The reversal of 230368788640 is 46887863032.

It can be written as a sum of positive squares in 4 ways, for example, as 209518583824 + 20850204816 = 457732^2 + 144396^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245241 + ... + 721720.

Almost surely, 2230368788640 is an apocalyptic number.

230368788640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230368788640 is an abundant number, since it is smaller than the sum of its proper divisors (314243549000).

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

230368788640 is a wasteful number, since it uses less digits than its factorization.

230368788640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968465 (or 968457 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 55.

The spelling of 230368788640 in words is "two hundred thirty billion, three hundred sixty-eight million, seven hundred eighty-eight thousand, six hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 1489 2978 5956 7445 11912 14890 23824 29780 47648 59560 119120 238240 966961 1933922 3867844 4834805 7735688 9669610 15471376 19339220 30942752 38678440 77356880 154713760 1439804929 2879609858 5759219716 7199024645 11518439432 14398049290 23036878864 28796098580 46073757728 57592197160 115184394320 230368788640