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128184066 = 2335934003
BaseRepresentation
bin1111010001111…
…10111100000010
322221012102111000
413220332330002
5230303342231
620415232430
73114355323
oct750767402
9287172430
10128184066
11663a164a
1236b18716
132073107a
141304a44a
15b3c06e6
hex7a3ef02

128184066 has 32 divisors (see below), whose sum is σ = 285405120. Its totient is φ = 42645312.

The previous prime is 128184047. The next prime is 128184071. The reversal of 128184066 is 660481821.

128184066 is a nontrivial binomial coefficient, being equal to C(16012, 2).

It is a self number, because there is not a number n which added to its sum of digits gives 128184066.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30021 + ... + 34023.

It is an arithmetic number, because the mean of its divisors is an integer number (8918910).

Almost surely, 2128184066 is an apocalyptic number.

128184066 is the 16011-st triangular number and also the 8006-th hexagonal number.

128184066 is an abundant number, since it is smaller than the sum of its proper divisors (157221054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128184066 is a wasteful number, since it uses less digits than its factorization.

128184066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4607 (or 4601 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 128184066 is about 11321.8402214481. The cubic root of 128184066 is about 504.2098757433.

The spelling of 128184066 in words is "one hundred twenty-eight million, one hundred eighty-four thousand, sixty-six".

Divisors: 1 2 3 6 9 18 27 54 593 1186 1779 3558 4003 5337 8006 10674 12009 16011 24018 32022 36027 72054 108081 216162 2373779 4747558 7121337 14242674 21364011 42728022 64092033 128184066