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12185383080 = 23351317459479
BaseRepresentation
bin10110101100100111…
…00011000010101000
31011110012221121010110
423112103203002220
5144423424224310
65333051014320
7610652022123
oct132623430250
934405847113
1012185383080
115193370732
122440a3a3a0
1311c26a1960
148384b73ba
154b4b8dd20
hex2d64e30a8

12185383080 has 128 divisors (see below), whose sum is σ = 41684025600. Its totient is φ = 2823032832.

The previous prime is 12185383073. The next prime is 12185383081. The reversal of 12185383080 is 8038358121.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (12185383081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203220 + ... + 256259.

It is an arithmetic number, because the mean of its divisors is an integer number (325656450).

Almost surely, 212185383080 is an apocalyptic number.

12185383080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12185383080 is an abundant number, since it is smaller than the sum of its proper divisors (29498642520).

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

12185383080 is a wasteful number, since it uses less digits than its factorization.

12185383080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459523 (or 459519 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 12185383080 in words is "twelve billion, one hundred eighty-five million, three hundred eighty-three thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 13 15 17 20 24 26 30 34 39 40 51 52 60 65 68 78 85 102 104 120 130 136 156 170 195 204 221 255 260 312 340 390 408 442 510 520 663 680 780 884 1020 1105 1326 1560 1768 2040 2210 2652 3315 4420 5304 6630 8840 13260 26520 459479 918958 1378437 1837916 2297395 2756874 3675832 4594790 5513748 5973227 6892185 7811143 9189580 11027496 11946454 13784370 15622286 17919681 18379160 23433429 23892908 27568740 29866135 31244572 35839362 39055715 46866858 47785816 55137480 59732270 62489144 71678724 78111430 89598405 93733716 101544859 117167145 119464540 143357448 156222860 179196810 187467432 203089718 234334290 238929080 304634577 312445720 358393620 406179436 468668580 507724295 609269154 716787240 812358872 937337160 1015448590 1218538308 1523172885 2030897180 2437076616 3046345770 4061794360 6092691540 12185383080