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10000131200 = 275210130941
BaseRepresentation
bin10010101000000110…
…11110010010000000
3221210221000022002122
421110003132102000
5130440013144300
64332145303412
7502545466313
oct112403362200
927727008078
1010000131200
1142718a4644
121b31034b68
13c34a350c7
146ac19897a
153d7dd6c85
hex2540de480

10000131200 has 96 divisors (see below), whose sum is σ = 24948844020. Its totient is φ = 3960320000.

The previous prime is 10000131151. The next prime is 10000131209. The reversal of 10000131200 is 213100001.

It can be written as a sum of positive squares in 6 ways, for example, as 5394608704 + 4605522496 = 73448^2 + 67864^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is not an unprimeable number, because it can be changed into a prime (10000131209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307730 + ... + 338670.

Almost surely, 210000131200 is an apocalyptic number.

10000131200 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 10000131200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12474422010).

10000131200 is an abundant number, since it is smaller than the sum of its proper divisors (14948712820).

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

10000131200 is a wasteful number, since it uses less digits than its factorization.

10000131200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31066 (or 31049 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 10000131200 its reverse (213100001), we get a palindrome (10213231201).

The spelling of 10000131200 in words is "ten billion, one hundred thirty-one thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 101 128 160 200 202 320 400 404 505 640 800 808 1010 1600 1616 2020 2525 3200 3232 4040 5050 6464 8080 10100 12928 16160 20200 30941 32320 40400 61882 64640 80800 123764 154705 161600 247528 309410 323200 495056 618820 773525 990112 1237640 1547050 1980224 2475280 3094100 3125041 3960448 4950560 6188200 6250082 9901120 12376400 12500164 15625205 19802240 24752800 25000328 31250410 49505600 50000656 62500820 78126025 99011200 100001312 125001640 156252050 200002624 250003280 312504100 400005248 500006560 625008200 1000013120 1250016400 2000026240 2500032800 5000065600 10000131200