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12999200 = 255216249
BaseRepresentation
bin110001100101…
…101000100000
3220110102112212
4301211220200
511311433300
61142341252
7215330354
oct61455040
926412485
1012999200
117379545
12442a828
132901a46
141a25464
15121b935
hexc65a20

12999200 has 36 divisors (see below), whose sum is σ = 31736250. Its totient is φ = 5199360.

The previous prime is 12999193. The next prime is 12999223. The reversal of 12999200 is 299921.

It can be written as a sum of positive squares in 3 ways, for example, as 10163344 + 2835856 = 3188^2 + 1684^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7325 + ... + 8924.

Almost surely, 212999200 is an apocalyptic number.

12999200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12999200 is an abundant number, since it is smaller than the sum of its proper divisors (18737050).

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

12999200 is a wasteful number, since it uses less digits than its factorization.

12999200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16269 (or 16256 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 12999200 is about 3605.4403337179. The cubic root of 12999200 is about 235.1286454225.

The spelling of 12999200 in words is "twelve million, nine hundred ninety-nine thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 200 400 800 16249 32498 64996 81245 129992 162490 259984 324980 406225 519968 649960 812450 1299920 1624900 2599840 3249800 6499600 12999200