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13447986980 = 2252194330643
BaseRepresentation
bin11001000011000111…
…11111111100100100
31021201012202112001212
430201203333330210
5210020141040410
610102233010552
7654153001061
oct144143777444
937635675055
1013447986980
11578104672a
122733853a58
13136414535c
14918061c68
1553a943b05
hex3218fff24

13447986980 has 24 divisors (see below), whose sum is σ = 28242981312. Its totient is φ = 5378774112.

The previous prime is 13447986973. The next prime is 13447987009. The reversal of 13447986980 is 8968974431.

It is a super-3 number, since 3×134479869803 (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423539 + ... + 454181.

It is an arithmetic number, because the mean of its divisors is an integer number (1176790888).

Almost surely, 213447986980 is an apocalyptic number.

13447986980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13447986980 is an abundant number, since it is smaller than the sum of its proper divisors (14794994332).

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

13447986980 is a wasteful number, since it uses less digits than its factorization.

13447986980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52595 (or 52593 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 59.

The spelling of 13447986980 in words is "thirteen billion, four hundred forty-seven million, nine hundred eighty-six thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 21943 30643 43886 61286 87772 109715 122572 153215 219430 306430 438860 612860 672399349 1344798698 2689597396 3361996745 6723993490 13447986980