Search a number
-
+
13122120448 = 282329313767
BaseRepresentation
bin11000011100010001…
…11010101100000000
31020212111120210020001
430032020322230000
5203333230323243
610010032325344
7643115116633
oct141610725400
936774523201
1013122120448
115624105348
1226626a3854
13131178bb18
148c6a77c1a
1551c025a4d
hex30e23ab00

13122120448 has 288 divisors, whose sum is σ = 30422568960. Its totient is φ = 5620285440.

The previous prime is 13122120433. The next prime is 13122120457. The reversal of 13122120448 is 84402122131.

It is a super-3 number, since 3×131221204483 (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195852511 + ... + 195852577.

It is an arithmetic number, because the mean of its divisors is an integer number (105633920).

Almost surely, 213122120448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13122120448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15211284480).

13122120448 is an abundant number, since it is smaller than the sum of its proper divisors (17300448512).

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

13122120448 is a wasteful number, since it uses less digits than its factorization.

13122120448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 13122120448 its reverse (84402122131), we get a palindrome (97524242579).

The spelling of 13122120448 in words is "thirteen billion, one hundred twenty-two million, one hundred twenty thousand, four hundred forty-eight".