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12087250400 = 2552127271439
BaseRepresentation
bin10110100000111010…
…01100110111100000
31011012101021221101202
423100131030313200
5144223314003100
65315223420332
7605350635041
oct132035146740
934171257352
1012087250400
115142a35145
122413bb46a8
1311a8263094
148294508c8
154ab2577d5
hex2d074cde0

12087250400 has 144 divisors (see below), whose sum is σ = 29918085120. Its totient is φ = 4768243200.

The previous prime is 12087250361. The next prime is 12087250403. The reversal of 12087250400 is 405278021.

It is a super-2 number, since 2×120872504002 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12087250403) 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, 27533381 + ... + 27533819.

It is an arithmetic number, because the mean of its divisors is an integer number (207764480).

Almost surely, 212087250400 is an apocalyptic number.

12087250400 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 12087250400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14959042560).

12087250400 is an abundant number, since it is smaller than the sum of its proper divisors (17830834720).

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

12087250400 is a wasteful number, since it uses less digits than its factorization.

12087250400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The spelling of 12087250400 in words is "twelve billion, eighty-seven million, two hundred fifty thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 127 160 200 254 271 400 439 508 542 635 800 878 1016 1084 1270 1355 1756 2032 2168 2195 2540 2710 3175 3512 4064 4336 4390 5080 5420 6350 6775 7024 8672 8780 10160 10840 10975 12700 13550 14048 17560 20320 21680 21950 25400 27100 34417 35120 43360 43900 50800 54200 55753 68834 70240 87800 101600 108400 111506 118969 137668 172085 175600 216800 223012 237938 275336 278765 344170 351200 446024 475876 550672 557530 594845 688340 860425 892048 951752 1101344 1115060 1189690 1376680 1393825 1720850 1784096 1903504 2230120 2379380 2753360 2787650 2974225 3441700 3807008 4460240 4758760 5506720 5575300 5948450 6883400 8920480 9517520 11150600 11896900 13766800 15109063 19035040 22301200 23793800 27533600 30218126 44602400 47587600 60436252 75545315 95175200 120872504 151090630 241745008 302181260 377726575 483490016 604362520 755453150 1208725040 1510906300 2417450080 3021812600 6043625200 12087250400