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12030311200 = 255215037889
BaseRepresentation
bin10110011010000111…
…11111101100100000
31011001102011010111111
423031003333230200
5144114224424300
65305431153104
7604056646405
oct131503775440
934042133444
1012030311200
115113884956
1223b8b15794
13119951834b
14821a6c2ac
154a625b9ba
hex2cd0ffb20

12030311200 has 36 divisors (see below), whose sum is σ = 29368999170. Its totient is φ = 4812124160.

The previous prime is 12030311179. The next prime is 12030311257. The reversal of 12030311200 is 211303021.

It can be written as a sum of positive squares in 3 ways, for example, as 7605932944 + 4424378256 = 87212^2 + 66516^2 .

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, 7518145 + ... + 7519744.

Almost surely, 212030311200 is an apocalyptic number.

12030311200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12030311200 is an abundant number, since it is smaller than the sum of its proper divisors (17338687970).

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

12030311200 is a wasteful number, since it uses less digits than its factorization.

12030311200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15037909 (or 15037896 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 12030311200 its reverse (211303021), we get a palindrome (12241614221).

The spelling of 12030311200 in words is "twelve billion, thirty million, three hundred eleven thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 200 400 800 15037889 30075778 60151556 75189445 120303112 150378890 240606224 300757780 375947225 481212448 601515560 751894450 1203031120 1503788900 2406062240 3007577800 6015155600 12030311200