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128413960 = 2353210349
BaseRepresentation
bin1111010011101…
…11000100001000
322221122002211121
413221313010020
5230333221320
620424205024
73116333503
oct751670410
9287562747
10128413960
1166539344
1237009774
13207b18bc
14130aa13a
15b4188aa
hex7a77108

128413960 has 16 divisors (see below), whose sum is σ = 288931500. Its totient is φ = 51365568.

The previous prime is 128413933. The next prime is 128413963. The reversal of 128413960 is 69314821.

It can be written as a sum of positive squares in 2 ways, for example, as 109872324 + 18541636 = 10482^2 + 4306^2 .

It is not an unprimeable number, because it can be changed into a prime (128413963) by changing a digit.

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, 1605135 + ... + 1605214.

Almost surely, 2128413960 is an apocalyptic number.

128413960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128413960 is an abundant number, since it is smaller than the sum of its proper divisors (160517540).

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

128413960 is a wasteful number, since it uses less digits than its factorization.

128413960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210360 (or 3210356 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 128413960 is about 11331.9883515648. The cubic root of 128413960 is about 504.5111237878.

The spelling of 128413960 in words is "one hundred twenty-eight million, four hundred thirteen thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 3210349 6420698 12841396 16051745 25682792 32103490 64206980 128413960