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128088330 = 23516132647
BaseRepresentation
bin1111010001001…
…11100100001010
322221000120011020
413220213210022
5230242311310
620413213310
73113506236
oct750474412
9287016136
10128088330
1166336727
1236a91236
13206c9616
14130235c6
15b3a2170
hex7a2790a

128088330 has 32 divisors (see below), whose sum is σ = 307718784. Its totient is φ = 34122816.

The previous prime is 128088299. The next prime is 128088341. The reversal of 128088330 is 33880821.

It is a junction number, because it is equal to n+sod(n) for n = 128088291 and 128088300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47067 + ... + 49713.

It is an arithmetic number, because the mean of its divisors is an integer number (9616212).

Almost surely, 2128088330 is an apocalyptic number.

128088330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128088330 is an abundant number, since it is smaller than the sum of its proper divisors (179630454).

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

128088330 is a wasteful number, since it uses less digits than its factorization.

128088330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 128088330 is about 11317.6114971314. The cubic root of 128088330 is about 504.0843191630.

The spelling of 128088330 in words is "one hundred twenty-eight million, eighty-eight thousand, three hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 1613 2647 3226 4839 5294 7941 8065 9678 13235 15882 16130 24195 26470 39705 48390 79410 4269611 8539222 12808833 21348055 25617666 42696110 64044165 128088330