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12768912 = 24321319359
BaseRepresentation
bin110000101101…
…011010010000
3220000201122200
4300231122100
511232101122
61133403200
7213351102
oct60553220
926021580
1012768912
117231522
124339500
132850c90
1419a5572
1511c35ac
hexc2d690

12768912 has 120 divisors (see below), whose sum is σ = 40622400. Its totient is φ = 3711744.

The previous prime is 12768907. The next prime is 12768937. The reversal of 12768912 is 21986721.

It is a super-2 number, since 2×127689122 = 326090227327488, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

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, 35389 + ... + 35747.

It is an arithmetic number, because the mean of its divisors is an integer number (338520).

Almost surely, 212768912 is an apocalyptic number.

12768912 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 12768912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20311200).

12768912 is an abundant number, since it is smaller than the sum of its proper divisors (27853488).

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

12768912 is a wasteful number, since it uses less digits than its factorization.

12768912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 396 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 12768912 is about 3573.3614426755. The cubic root of 12768912 is about 233.7318866497.

The spelling of 12768912 in words is "twelve million, seven hundred sixty-eight thousand, nine hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 13 16 18 19 24 26 36 38 39 48 52 57 72 76 78 104 114 117 144 152 156 171 208 228 234 247 304 312 342 359 456 468 494 624 684 718 741 912 936 988 1077 1368 1436 1482 1872 1976 2154 2223 2736 2872 2964 3231 3952 4308 4446 4667 5744 5928 6462 6821 8616 8892 9334 11856 12924 13642 14001 17232 17784 18668 20463 25848 27284 28002 35568 37336 40926 42003 51696 54568 56004 61389 74672 81852 84006 88673 109136 112008 122778 163704 168012 177346 224016 245556 266019 327408 336024 354692 491112 532038 672048 709384 798057 982224 1064076 1418768 1596114 2128152 3192228 4256304 6384456 12768912