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128755083 = 396744383
BaseRepresentation
bin1111010110010…
…10010110001011
322222021102202210
413223022112023
5230430130313
620435400203
73122254152
oct753122613
9288242683
10128755083
1166751666
1237153063
13208a0c52
1413158599
15b4849c3
hex7aca58b

128755083 has 8 divisors (see below), whose sum is σ = 171854848. Its totient is φ = 85746024.

The previous prime is 128755061. The next prime is 128755091. The reversal of 128755083 is 380557821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128755083 - 221 = 126657931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128756083) 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, 19291 + ... + 25092.

It is an arithmetic number, because the mean of its divisors is an integer number (21481856).

Almost surely, 2128755083 is an apocalyptic number.

128755083 is a deficient number, since it is larger than the sum of its proper divisors (43099765).

128755083 is an equidigital number, since it uses as much as digits as its factorization.

128755083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45353.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 128755083 is about 11347.0296994412. The cubic root of 128755083 is about 504.9574620249.

The spelling of 128755083 in words is "one hundred twenty-eight million, seven hundred fifty-five thousand, eighty-three".

Divisors: 1 3 967 2901 44383 133149 42918361 128755083