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12968320 = 27523881
BaseRepresentation
bin110001011110…
…000110000000
3220101212012011
4301132012000
511304441240
61141542304
7215141341
oct61360600
926355164
1012968320
117358322
124414994
1328c0981
141a180c8
1512126ea
hexc5e180

12968320 has 64 divisors (see below), whose sum is σ = 32387040. Its totient is φ = 4956160.

The previous prime is 12968303. The next prime is 12968321. The reversal of 12968320 is 2386921.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12968321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14280 + ... + 15160.

Almost surely, 212968320 is an apocalyptic number.

12968320 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 12968320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16193520).

12968320 is an abundant number, since it is smaller than the sum of its proper divisors (19418720).

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

12968320 is an equidigital number, since it uses as much as digits as its factorization.

12968320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923 (or 911 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 12968320 is about 3601.1553701555. The cubic root of 12968320 is about 234.9423126849.

The spelling of 12968320 in words is "twelve million, nine hundred sixty-eight thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 23 32 40 46 64 80 92 115 128 160 184 230 320 368 460 640 736 881 920 1472 1762 1840 2944 3524 3680 4405 7048 7360 8810 14096 14720 17620 20263 28192 35240 40526 56384 70480 81052 101315 112768 140960 162104 202630 281920 324208 405260 563840 648416 810520 1296832 1621040 2593664 3242080 6484160 12968320