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12007680 = 28355359
BaseRepresentation
bin101101110011…
…100100000000
3211121001102220
4231303210000
511033221210
61105211040
7204030546
oct55634400
924531386
1012007680
116861603
124030a80
132645649
141847d96
1510c2c70
hexb73900

12007680 has 144 divisors (see below), whose sum is σ = 39735360. Its totient is φ = 3088384.

The previous prime is 12007669. The next prime is 12007747. The reversal of 12007680 is 8670021.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12007680.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203491 + ... + 203549.

It is an arithmetic number, because the mean of its divisors is an integer number (275940).

Almost surely, 212007680 is an apocalyptic number.

12007680 is a gapful number since it is divisible by the number (10) 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 12007680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19867680).

12007680 is an abundant number, since it is smaller than the sum of its proper divisors (27727680).

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

12007680 is an equidigital number, since it uses as much as digits as its factorization.

12007680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 12007680 is about 3465.2099503493. The cubic root of 12007680 is about 228.9916792359.

The spelling of 12007680 in words is "twelve million, seven thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 53 59 60 64 80 96 106 118 120 128 159 160 177 192 212 236 240 256 265 295 318 320 354 384 424 472 480 530 590 636 640 708 768 795 848 885 944 960 1060 1180 1272 1280 1416 1590 1696 1770 1888 1920 2120 2360 2544 2832 3127 3180 3392 3540 3776 3840 4240 4720 5088 5664 6254 6360 6784 7080 7552 8480 9381 9440 10176 11328 12508 12720 13568 14160 15104 15635 16960 18762 18880 20352 22656 25016 25440 28320 31270 33920 37524 37760 40704 45312 46905 50032 50880 56640 62540 67840 75048 75520 93810 100064 101760 113280 125080 150096 187620 200128 203520 226560 250160 300192 375240 400256 500320 600384 750480 800512 1000640 1200768 1500960 2001280 2401536 3001920 4002560 6003840 12007680