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128148163 = 11138910069
BaseRepresentation
bin1111010001101…
…10001011000011
322221010121020021
413220312023003
5230301220123
620414354311
73114145543
oct750661303
9287117207
10128148163
1166377680
1236abb997
132071a920
141303b323
15b3b4c5d
hex7a362c3

128148163 has 16 divisors (see below), whose sum is σ = 152258400. Its totient is φ = 106318080.

The previous prime is 128148161. The next prime is 128148169. The reversal of 128148163 is 361841821.

It is not a de Polignac number, because 128148163 - 21 = 128148161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128148161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7693 + ... + 17761.

It is an arithmetic number, because the mean of its divisors is an integer number (9516150).

Almost surely, 2128148163 is an apocalyptic number.

128148163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

128148163 is a deficient number, since it is larger than the sum of its proper divisors (24110237).

128148163 is a wasteful number, since it uses less digits than its factorization.

128148163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10182.

The product of its digits is 9216, while the sum is 34.

The square root of 128148163 is about 11320.2545466080. The cubic root of 128148163 is about 504.1627967313.

Adding to 128148163 its reverse (361841821), we get a palindrome (489989984).

The spelling of 128148163 in words is "one hundred twenty-eight million, one hundred forty-eight thousand, one hundred sixty-three".

Divisors: 1 11 13 89 143 979 1157 10069 12727 110759 130897 896141 1439867 9857551 11649833 128148163