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12838680 = 23325191877
BaseRepresentation
bin110000111110…
…011100011000
3220011021100200
4300332130120
511241314210
61135102200
7214061361
oct60763430
926137320
1012838680
117279988
124371960
13287696a
1419c2b68
1511d90c0
hexc3e718

12838680 has 96 divisors (see below), whose sum is σ = 43945200. Its totient is φ = 3241728.

The previous prime is 12838649. The next prime is 12838691. The reversal of 12838680 is 8683821.

12838680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5902 + ... + 7778.

Almost surely, 212838680 is an apocalyptic number.

12838680 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 12838680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21972600).

12838680 is an abundant number, since it is smaller than the sum of its proper divisors (31106520).

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

12838680 is a wasteful number, since it uses less digits than its factorization.

12838680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913 (or 1906 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 12838680 is about 3583.1103806609. The cubic root of 12838680 is about 234.1568092055.

The spelling of 12838680 in words is "twelve million, eight hundred thirty-eight thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 19 20 24 30 36 38 40 45 57 60 72 76 90 95 114 120 152 171 180 190 228 285 342 360 380 456 570 684 760 855 1140 1368 1710 1877 2280 3420 3754 5631 6840 7508 9385 11262 15016 16893 18770 22524 28155 33786 35663 37540 45048 56310 67572 71326 75080 84465 106989 112620 135144 142652 168930 178315 213978 225240 285304 320967 337860 356630 427956 534945 641934 675720 713260 855912 1069890 1283868 1426520 1604835 2139780 2567736 3209670 4279560 6419340 12838680