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128380160 = 285100297
BaseRepresentation
bin1111010011011…
…10110100000000
322221120101110202
413221232310000
5230331131120
620423344332
73116133116
oct751566400
9287511422
10128380160
1166515a07
1236bb20a8
132079c3bc
141309bab6
15b40d875
hex7a6ed00

128380160 has 36 divisors (see below), whose sum is σ = 307513668. Its totient is φ = 51351552.

The previous prime is 128380159. The next prime is 128380183. The reversal of 128380160 is 61083821.

It can be written as a sum of positive squares in 2 ways, for example, as 95570176 + 32809984 = 9776^2 + 5728^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 48869 + ... + 51428.

Almost surely, 2128380160 is an apocalyptic number.

128380160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128380160 is an abundant number, since it is smaller than the sum of its proper divisors (179133508).

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

128380160 is an equidigital number, since it uses as much as digits as its factorization.

128380160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100318 (or 100304 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 128380160 is about 11330.4968999599. The cubic root of 128380160 is about 504.4668555676.

The spelling of 128380160 in words is "one hundred twenty-eight million, three hundred eighty thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 640 1280 100297 200594 401188 501485 802376 1002970 1604752 2005940 3209504 4011880 6419008 8023760 12838016 16047520 25676032 32095040 64190080 128380160