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128112063 = 31073171259
BaseRepresentation
bin1111010001011…
…01010110111111
322221001202201020
413220231112333
5230244041223
620413515223
73113635362
oct750552677
9287052636
10128112063
1166352542
1236aa2b13
1320707371
141302c0d9
15b3a91e3
hex7a2d5bf

128112063 has 16 divisors (see below), whose sum is σ = 173093760. Its totient is φ = 84275936.

The previous prime is 128112043. The next prime is 128112109. The reversal of 128112063 is 360211821.

It is a cyclic number.

It is not a de Polignac number, because 128112063 - 26 = 128111999 is a prime.

It is a super-2 number, since 2×1281120632 = 32825401372231938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128112043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101128 + ... + 102386.

It is an arithmetic number, because the mean of its divisors is an integer number (10818360).

Almost surely, 2128112063 is an apocalyptic number.

128112063 is a deficient number, since it is larger than the sum of its proper divisors (44981697).

128112063 is a wasteful number, since it uses less digits than its factorization.

128112063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 128112063 is about 11318.6599471846. The cubic root of 128112063 is about 504.1154505297.

Adding to 128112063 its reverse (360211821), we get a palindrome (488323884).

The spelling of 128112063 in words is "one hundred twenty-eight million, one hundred twelve thousand, sixty-three".

Divisors: 1 3 107 317 321 951 1259 3777 33919 101757 134713 399103 404139 1197309 42704021 128112063