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128412118 = 2178114657
BaseRepresentation
bin1111010011101…
…10100111010110
322221122000022101
413221312213112
5230333141433
620424152314
73116325232
oct751664726
9287560271
10128412118
1166537a1a
123700869a
13207b0b03
14130a95c2
15b41807d
hex7a769d6

128412118 has 16 divisors (see below), whose sum is σ = 204243984. Its totient is φ = 60341760.

The previous prime is 128412103. The next prime is 128412139. The reversal of 128412118 is 811214821.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 25246 + ... + 29902.

It is an arithmetic number, because the mean of its divisors is an integer number (12765249).

Almost surely, 2128412118 is an apocalyptic number.

128412118 is a deficient number, since it is larger than the sum of its proper divisors (75831866).

128412118 is a wasteful number, since it uses less digits than its factorization.

128412118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5487.

The product of its digits is 1024, while the sum is 28.

The square root of 128412118 is about 11331.9070769222. The cubic root of 128412118 is about 504.5087115009.

Adding to 128412118 its reverse (811214821), we get a palindrome (939626939).

The spelling of 128412118 in words is "one hundred twenty-eight million, four hundred twelve thousand, one hundred eighteen".

Divisors: 1 2 17 34 811 1622 4657 9314 13787 27574 79169 158338 3776827 7553654 64206059 128412118