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143648 = 25672
BaseRepresentation
bin100011000100100000
321022001022
4203010200
514044043
63025012
71135541
oct430440
9238038
10143648
1198a1a
126b168
13504cb
143a4c8
152c868
hex23120

143648 has 18 divisors (see below), whose sum is σ = 287091. Its totient is φ = 70752.

The previous prime is 143629. The next prime is 143651. The reversal of 143648 is 846341.

Adding to 143648 its reverse (846341), we get a palindrome (989989).

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 71824 + 71824 = 268^2 + 268^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=268.

It is a Duffinian number.

Its product of digits (2304) is a multiple of the sum of its prime factors (144).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143648.

It is an unprimeable number.

143648 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2111 + ... + 2177.

143648 is a Friedman number, since it can be written as 134^(6-4)*8, using all its digits and the basic arithmetic operations.

2143648 is an apocalyptic number.

It is an amenable number.

143648 is a deficient number, since it is larger than the sum of its proper divisors (143443).

143648 is an frugal number, since it uses more digits than its factorization.

143648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 69 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 143648 is about 379.0092347160. The cubic root of 143648 is about 52.3720846591.

The spelling of 143648 in words is "one hundred forty-three thousand, six hundred forty-eight".

Divisors: 1 2 4 8 16 32 67 134 268 536 1072 2144 4489 8978 17956 35912 71824 143648