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128028283859 = 785992126963
BaseRepresentation
bin111011100111100010…
…1001001001111010011
3110020110111210200120002
41313033011021033103
54044200220040414
6134452042240215
712151442312540
oct1671705111723
9406414720502
10128028283859
114a3296a0663
12209904b606b
13c0c45512a8
1462a7693bc7
1534e4bdb4de
hex1dcf1493d3

128028283859 has 8 divisors (see below), whose sum is σ = 146335123200. Its totient is φ = 109725715656.

The previous prime is 128028283853. The next prime is 128028283897. The reversal of 128028283859 is 958382820821.

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

It is a cyclic number.

It is not a de Polignac number, because 128028283859 - 24 = 128028283843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128028283853) 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, 1003289 + ... + 1123674.

It is an arithmetic number, because the mean of its divisors is an integer number (18291890400).

Almost surely, 2128028283859 is an apocalyptic number.

128028283859 is a deficient number, since it is larger than the sum of its proper divisors (18306839341).

128028283859 is an equidigital number, since it uses as much as digits as its factorization.

128028283859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135569.

The product of its (nonzero) digits is 4423680, while the sum is 56.

The spelling of 128028283859 in words is "one hundred twenty-eight billion, twenty-eight million, two hundred eighty-three thousand, eight hundred fifty-nine".

Divisors: 1 7 8599 60193 2126963 14888741 18289754837 128028283859