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12748800 = 21135283
BaseRepresentation
bin110000101000…
…100000000000
3212222201001210
4300220200000
511230430200
61133130120
7213235341
oct60504000
925881053
1012748800
1172183a9
124329940
132844a8c
14199c0c8
1511bc650
hexc28800

12748800 has 144 divisors (see below), whose sum is σ = 42653520. Its totient is φ = 3358720.

The previous prime is 12748787. The next prime is 12748811. The reversal of 12748800 is 884721.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153559 + ... + 153641.

It is an arithmetic number, because the mean of its divisors is an integer number (296205).

Almost surely, 212748800 is an apocalyptic number.

12748800 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 12748800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21326760).

12748800 is an abundant number, since it is smaller than the sum of its proper divisors (29904720).

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

12748800 is an equidigital number, since it uses as much as digits as its factorization.

12748800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 12748800 is about 3570.5461767074. The cubic root of 12748800 is about 233.6091070447.

The spelling of 12748800 in words is "twelve million, seven hundred forty-eight thousand, eight hundred".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 32 40 48 50 60 64 75 80 83 96 100 120 128 150 160 166 192 200 240 249 256 300 320 332 384 400 415 480 498 512 600 640 664 768 800 830 960 996 1024 1200 1245 1280 1328 1536 1600 1660 1920 1992 2048 2075 2400 2490 2560 2656 3072 3200 3320 3840 3984 4150 4800 4980 5120 5312 6144 6225 6400 6640 7680 7968 8300 9600 9960 10240 10624 12450 12800 13280 15360 15936 16600 19200 19920 21248 24900 25600 26560 30720 31872 33200 38400 39840 42496 49800 51200 53120 63744 66400 76800 79680 84992 99600 106240 127488 132800 153600 159360 169984 199200 212480 254976 265600 318720 398400 424960 509952 531200 637440 796800 849920 1062400 1274880 1593600 2124800 2549760 3187200 4249600 6374400 12748800