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12008287240 = 235541955399
BaseRepresentation
bin10110010111011111…
…11110110000001000
31010222212201012022021
423023233332300020
5144043110142430
65303323134224
7603401520535
oct131357766010
933885635267
1012008287240
115102401a34
1223b1674374
131194aa6911
1481cb77d8c
154a435b07a
hex2cbbfec08

12008287240 has 32 divisors (see below), whose sum is σ = 27024120000. Its totient is φ = 4802341824.

The previous prime is 12008287219. The next prime is 12008287243. The reversal of 12008287240 is 4278280021.

It is a junction number, because it is equal to n+sod(n) for n = 12008287196 and 12008287205.

It is not an unprimeable number, because it can be changed into a prime (12008287243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189061 + ... + 244459.

It is an arithmetic number, because the mean of its divisors is an integer number (844503750).

Almost surely, 212008287240 is an apocalyptic number.

12008287240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12008287240 is an abundant number, since it is smaller than the sum of its proper divisors (15015832760).

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

12008287240 is a wasteful number, since it uses less digits than its factorization.

12008287240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60829 (or 60825 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The spelling of 12008287240 in words is "twelve billion, eight million, two hundred eighty-seven thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 20 40 5419 10838 21676 27095 43352 54190 55399 108380 110798 216760 221596 276995 443192 553990 1107980 2215960 300207181 600414362 1200828724 1501035905 2401657448 3002071810 6004143620 12008287240