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30000231200 = 255237500289
BaseRepresentation
bin11011111100001001…
…110011001100100000
32212102202201122112002
4123330021303030200
5442420024344300
621440521023132
72111301520622
oct337411631440
985382648462
1030000231200
11117a5391805
125993024aa8
132aa14463c4
1416484a8c12
15ba8b725d5
hex6fc273320

30000231200 has 36 divisors (see below), whose sum is σ = 73238066370. Its totient is φ = 12000092160.

The previous prime is 30000231179. The next prime is 30000231229. The reversal of 30000231200 is 213200003.

It can be written as a sum of positive squares in 3 ways, for example, as 26727018256 + 3273212944 = 163484^2 + 57212^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18749345 + ... + 18750944.

Almost surely, 230000231200 is an apocalyptic number.

It is an amenable number.

30000231200 is an abundant number, since it is smaller than the sum of its proper divisors (43237835170).

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

30000231200 is a wasteful number, since it uses less digits than its factorization.

30000231200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37500309 (or 37500296 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 30000231200 its reverse (213200003), we get a palindrome (30213431203).

The spelling of 30000231200 in words is "thirty billion, two hundred thirty-one thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 200 400 800 37500289 75000578 150001156 187501445 300002312 375002890 600004624 750005780 937507225 1200009248 1500011560 1875014450 3000023120 3750028900 6000046240 7500057800 15000115600 30000231200