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12873680 = 2452931179
BaseRepresentation
bin110001000110…
…111111010000
3220020001100222
4301012333100
511243424210
61135532212
7214265411
oct61067720
926201328
1012873680
1172a3206
12438a068
132889881
1419d1808
1511e4655
hexc46fd0

12873680 has 80 divisors (see below), whose sum is σ = 32140800. Its totient is φ = 4784640.

The previous prime is 12873673. The next prime is 12873683. The reversal of 12873680 is 8637821.

12873680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 12873680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12873683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71831 + ... + 72009.

It is an arithmetic number, because the mean of its divisors is an integer number (401760).

Almost surely, 212873680 is an apocalyptic number.

12873680 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 12873680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16070400).

12873680 is an abundant number, since it is smaller than the sum of its proper divisors (19267120).

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

12873680 is a wasteful number, since it uses less digits than its factorization.

12873680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 12873680 is about 3587.9910813713. The cubic root of 12873680 is about 234.3693973179.

The spelling of 12873680 in words is "twelve million, eight hundred seventy-three thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 29 31 40 58 62 80 116 124 145 155 179 232 248 290 310 358 464 496 580 620 716 895 899 1160 1240 1432 1790 1798 2320 2480 2864 3580 3596 4495 5191 5549 7160 7192 8990 10382 11098 14320 14384 17980 20764 22196 25955 27745 35960 41528 44392 51910 55490 71920 83056 88784 103820 110980 160921 207640 221960 321842 415280 443920 643684 804605 1287368 1609210 2574736 3218420 6436840 12873680