Search a number
-
+
12008438784 = 210331729881
BaseRepresentation
bin10110010111100001…
…00011110000000000
31010222212222220012000
423023300203300000
5144043130020114
65303330304000
7603403021416
oct131360436000
933885886160
1012008438784
1151024a5881
1223b1728000
131194b2a8a4
1481cbb72b6
154a438ae09
hex2cbc23c00

12008438784 has 352 divisors, whose sum is σ = 38997806400. Its totient is φ = 3633315840.

The previous prime is 12008438719. The next prime is 12008438803. The reversal of 12008438784 is 48783480021.

12008438784 is a `hidden beast` number, since 1 + 200 + 8 + 438 + 7 + 8 + 4 = 666.

It is a congruent number.

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, 13630024 + ... + 13630904.

Almost surely, 212008438784 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 12008438784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19498903200).

12008438784 is an abundant number, since it is smaller than the sum of its proper divisors (26989367616).

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

12008438784 is a wasteful number, since it uses less digits than its factorization.

12008438784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956 (or 932 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The spelling of 12008438784 in words is "twelve billion, eight million, four hundred thirty-eight thousand, seven hundred eighty-four".