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7128010930 = 251937515847
BaseRepresentation
bin1101010001101110…
…01101000010110010
3200101202121110202211
412220313031002302
5104044232322210
63135150002334
7341432043655
oct65067150262
920352543684
107128010930
113028638127
12146b1a63aa
138979a6261
144b895d89c
152baba338a
hex1a8dcd0b2

7128010930 has 16 divisors (see below), whose sum is σ = 13505705280. Its totient is φ = 2701140912.

The previous prime is 7128010921. The next prime is 7128010931. The reversal of 7128010930 is 390108217.

It is a junction number, because it is equal to n+sod(n) for n = 7128010892 and 7128010901.

It is not an unprimeable number, because it can be changed into a prime (7128010931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18757734 + ... + 18758113.

It is an arithmetic number, because the mean of its divisors is an integer number (844106580).

Almost surely, 27128010930 is an apocalyptic number.

7128010930 is a deficient number, since it is larger than the sum of its proper divisors (6377694350).

7128010930 is a wasteful number, since it uses less digits than its factorization.

7128010930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37515873.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 7128010930 is about 84427.5484069033. The cubic root of 7128010930 is about 1924.5215816769.

The spelling of 7128010930 in words is "seven billion, one hundred twenty-eight million, ten thousand, nine hundred thirty".

Divisors: 1 2 5 10 19 38 95 190 37515847 75031694 187579235 375158470 712801093 1425602186 3564005465 7128010930