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12960387072 = 21233117191
BaseRepresentation
bin11000001000111111…
…11101000000000000
31020110020020212202000
430010133331000000
5203020324341242
65542014024000
7636112321023
oct140437750000
936406225660
1012960387072
1155508896a6
1226184a8000
1312b71123b9
148ad3b71ba
1550cc29a4c
hex3047fd000

12960387072 has 104 divisors (see below), whose sum is σ = 38396786880. Its totient is φ = 4320092160.

The previous prime is 12960387067. The next prime is 12960387109. The reversal of 12960387072 is 27078306921.

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 7 ways as a sum of consecutive naturals, for example, 51997 + ... + 169187.

Almost surely, 212960387072 is an apocalyptic number.

12960387072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12960387072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19198393440).

12960387072 is an abundant number, since it is smaller than the sum of its proper divisors (25436399808).

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

12960387072 is an equidigital number, since it uses as much as digits as its factorization.

12960387072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117224 (or 117196 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 12960387072 in words is "twelve billion, nine hundred sixty million, three hundred eighty-seven thousand, seventy-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 96 108 128 144 192 216 256 288 384 432 512 576 768 864 1024 1152 1536 1728 2048 2304 3072 3456 4096 4608 6144 6912 9216 12288 13824 18432 27648 36864 55296 110592 117191 234382 351573 468764 703146 937528 1054719 1406292 1875056 2109438 2812584 3164157 3750112 4218876 5625168 6328314 7500224 8437752 11250336 12656628 15000448 16875504 22500672 25313256 30000896 33751008 45001344 50626512 60001792 67502016 90002688 101253024 120003584 135004032 180005376 202506048 240007168 270008064 360010752 405012096 480014336 540016128 720021504 810024192 1080032256 1440043008 1620048384 2160064512 3240096768 4320129024 6480193536 12960387072