Search a number
-
+
243130244 = 2278683223
BaseRepresentation
bin11100111110111…
…01111110000100
3121221111021222212
432133131332010
5444220131434
640043042552
76011400350
oct1637357604
9557437885
10243130244
11115271395
1269510458
133b4a8866
142440c460
15165288ce
hexe7ddf84

243130244 has 12 divisors (see below), whose sum is σ = 486260544. Its totient is φ = 104198664.

The previous prime is 243130207. The next prime is 243130247. The reversal of 243130244 is 442031342.

243130244 is an admirable number.

It is a super-2 number, since 2×2431302442 = 118224631094999072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243130247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4341584 + ... + 4341639.

It is an arithmetic number, because the mean of its divisors is an integer number (40521712).

Almost surely, 2243130244 is an apocalyptic number.

It is an amenable number.

243130244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

243130244 is a wasteful number, since it uses less digits than its factorization.

243130244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8683234 (or 8683232 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 243130244 is about 15592.6342867394. The cubic root of 243130244 is about 624.1366160716.

Adding to 243130244 its reverse (442031342), we get a palindrome (685161586).

The spelling of 243130244 in words is "two hundred forty-three million, one hundred thirty thousand, two hundred forty-four".

Divisors: 1 2 4 7 14 28 8683223 17366446 34732892 60782561 121565122 243130244