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1383382800 = 24345242697
BaseRepresentation
bin101001001110100…
…1011111100010000
310120102002010110000
41102131023330100
510313121222200
6345134410000
746165363002
oct12235137420
93512063400
101383382800
1164a979a78
12327360900
131907b1007
14d1a28372
15816b1300
hex5274bf10

1383382800 has 150 divisors (see below), whose sum is σ = 4964966138. Its totient is φ = 368893440.

The previous prime is 1383382789. The next prime is 1383382801. The reversal of 1383382800 is 82833831.

It can be written as a sum of positive squares in 3 ways, for example, as 3111696 + 1380271104 = 1764^2 + 37152^2 .

It is a tau number, because it is divible by the number of its divisors (150).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1383382801) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 11052 + ... + 53748.

Almost surely, 21383382800 is an apocalyptic number.

1383382800 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 1383382800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2482483069).

1383382800 is an abundant number, since it is smaller than the sum of its proper divisors (3581583338).

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

1383382800 is a wasteful number, since it uses less digits than its factorization.

1383382800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42727 (or 42707 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1383382800 is about 37193.8543310585. The cubic root of 1383382800 is about 1114.2452478965.

The spelling of 1383382800 in words is "one billion, three hundred eighty-three million, three hundred eighty-two thousand, eight hundred".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 36 40 45 48 50 54 60 72 75 80 81 90 100 108 120 135 144 150 162 180 200 216 225 240 270 300 324 360 400 405 432 450 540 600 648 675 720 810 900 1080 1200 1296 1350 1620 1800 2025 2160 2700 3240 3600 4050 5400 6480 8100 10800 16200 32400 42697 85394 128091 170788 213485 256182 341576 384273 426970 512364 640455 683152 768546 853940 1024728 1067425 1152819 1280910 1537092 1707880 1921365 2049456 2134850 2305638 2561820 3074184 3202275 3415760 3458457 3842730 4269700 4611276 5123640 5764095 6148368 6404550 6916914 7685460 8539400 9222552 9606825 10247280 11528190 12809100 13833828 15370920 17078800 17292285 18445104 19213650 23056380 25618200 27667656 28820475 30741840 34584570 38427300 46112760 51236400 55335312 57640950 69169140 76854600 86461425 92225520 115281900 138338280 153709200 172922850 230563800 276676560 345845700 461127600 691691400 1383382800