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12871200 = 2535231173
BaseRepresentation
bin110001000110…
…011000100000
3220012220222010
4301012120200
511243334300
61135512520
7214255236
oct61063040
926186863
1012871200
1172a1361
124388740
1328886c4
1419d0956
1511e3a50
hexc46620

12871200 has 144 divisors (see below), whose sum is σ = 43497216. Its totient is φ = 3302400.

The previous prime is 12871181. The next prime is 12871207. The reversal of 12871200 is 217821.

12871200 = T296 + T297 + ... + T468.

It is not an unprimeable number, because it can be changed into a prime (12871207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74314 + ... + 74486.

It is an arithmetic number, because the mean of its divisors is an integer number (302064).

Almost surely, 212871200 is an apocalyptic number.

12871200 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 12871200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21748608).

12871200 is an abundant number, since it is smaller than the sum of its proper divisors (30626016).

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

12871200 is a wasteful number, since it uses less digits than its factorization.

12871200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 12871200 is about 3587.6454674340. The cubic root of 12871200 is about 234.3543466245.

The spelling of 12871200 in words is "twelve million, eight hundred seventy-one thousand, two hundred".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 31 32 40 48 50 60 62 75 80 93 96 100 120 124 150 155 160 173 186 200 240 248 300 310 346 372 400 465 480 496 519 600 620 692 744 775 800 865 930 992 1038 1200 1240 1384 1488 1550 1730 1860 2076 2325 2400 2480 2595 2768 2976 3100 3460 3720 4152 4325 4650 4960 5190 5363 5536 6200 6920 7440 8304 8650 9300 10380 10726 12400 12975 13840 14880 16089 16608 17300 18600 20760 21452 24800 25950 26815 27680 32178 34600 37200 41520 42904 51900 53630 64356 69200 74400 80445 83040 85808 103800 107260 128712 134075 138400 160890 171616 207600 214520 257424 268150 321780 402225 415200 429040 514848 536300 643560 804450 858080 1072600 1287120 1608900 2145200 2574240 3217800 4290400 6435600 12871200