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128441066 = 21316330307
BaseRepresentation
bin1111010011111…
…01101011101010
322221200111000112
413221331223222
5230340103231
620424534322
73116505515
oct751755352
9287614015
10128441066
1166557746
12370213a2
13207c1040
14130b5d7c
15b42192b
hex7a7daea

128441066 has 16 divisors (see below), whose sum is σ = 208761504. Its totient is φ = 58914864.

The previous prime is 128441063. The next prime is 128441081. The reversal of 128441066 is 660144821.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128441063) 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, 10916 + ... + 19391.

It is an arithmetic number, because the mean of its divisors is an integer number (13047594).

Almost surely, 2128441066 is an apocalyptic number.

128441066 is a deficient number, since it is larger than the sum of its proper divisors (80320438).

128441066 is a wasteful number, since it uses less digits than its factorization.

128441066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30485.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 128441066 is about 11333.1842833336. The cubic root of 128441066 is about 504.5466191924.

Adding to 128441066 its reverse (660144821), we get a palindrome (788585887).

The spelling of 128441066 in words is "one hundred twenty-eight million, four hundred forty-one thousand, sixty-six".

Divisors: 1 2 13 26 163 326 2119 4238 30307 60614 393991 787982 4940041 9880082 64220533 128441066