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12008005772 = 227428857349
BaseRepresentation
bin10110010111011101…
…11010000010001100
31010222212011220012112
423023232322002030
5144043022141042
65303313123152
7603366236120
oct131356720214
933885156175
1012008005772
11510222a514
1223b15594b8
131194a08779
1481cb03580
154a4302982
hex2cbbba08c

12008005772 has 12 divisors (see below), whose sum is σ = 24016011600. Its totient is φ = 5146288176.

The previous prime is 12008005729. The next prime is 12008005781. The reversal of 12008005772 is 27750080021.

12008005772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

12008005772 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214428647 + ... + 214428702.

It is an arithmetic number, because the mean of its divisors is an integer number (2001334300).

Almost surely, 212008005772 is an apocalyptic number.

It is an amenable number.

12008005772 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.

12008005772 is a wasteful number, since it uses less digits than its factorization.

12008005772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428857360 (or 428857358 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

Adding to 12008005772 its reverse (27750080021), we get a palindrome (39758085793).

The spelling of 12008005772 in words is "twelve billion, eight million, five thousand, seven hundred seventy-two".

Divisors: 1 2 4 7 14 28 428857349 857714698 1715429396 3002001443 6004002886 12008005772