Search a number
-
+
304131404 = 221918122109
BaseRepresentation
bin10010001000001…
…010110101001100
3210012021110212002
4102020022311030
51110324201104
650102331432
710352034323
oct2210126514
9705243762
10304131404
11146746475
1285a29b78
134b016415
142c56b0ba
151ba7801e
hex1220ad4c

304131404 has 24 divisors (see below), whose sum is σ = 563362800. Its totient is φ = 143259840.

The previous prime is 304131403. The next prime is 304131409. The reversal of 304131404 is 404131403.

It is a happy number.

304131404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3041314042 = 184991821798022432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (304131403) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2702 + ... + 24810.

It is an arithmetic number, because the mean of its divisors is an integer number (23473450).

Almost surely, 2304131404 is an apocalyptic number.

It is an amenable number.

304131404 is a deficient number, since it is larger than the sum of its proper divisors (259231396).

304131404 is a wasteful number, since it uses less digits than its factorization.

304131404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22313 (or 22311 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 304131404 is about 17439.3636351789. The cubic root of 304131404 is about 672.4919483289.

Adding to 304131404 its reverse (404131403), we get a palindrome (708262807).

Subtracting 304131404 from its reverse (404131403), we obtain a palindrome (99999999).

The spelling of 304131404 in words is "three hundred four million, one hundred thirty-one thousand, four hundred four".

Divisors: 1 2 4 19 38 76 181 362 724 3439 6878 13756 22109 44218 88436 420071 840142 1680284 4001729 8003458 16006916 76032851 152065702 304131404