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3440143 = 7270207
BaseRepresentation
bin1101000111111000001111
320110202222201
431013320033
51340041033
6201422331
741145400
oct15077017
96422881
103440143
111a3a6a3
12119a9a7
13935ab5
146579a7
1547e47d
hex347e0f

3440143 has 6 divisors (see below), whose sum is σ = 4001856. Its totient is φ = 2948652.

The previous prime is 3440131. The next prime is 3440147. The reversal of 3440143 is 3410443.

It is not a de Polignac number, because 3440143 - 217 = 3309071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3440143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440147) 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 5 ways as a sum of consecutive naturals, for example, 35055 + ... + 35152.

It is an arithmetic number, because the mean of its divisors is an integer number (666976).

Almost surely, 23440143 is an apocalyptic number.

3440143 is a deficient number, since it is larger than the sum of its proper divisors (561713).

3440143 is an equidigital number, since it uses as much as digits as its factorization.

3440143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70221 (or 70214 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 3440143 is about 1854.7622489149. The cubic root of 3440143 is about 150.9589380038.

Adding to 3440143 its reverse (3410443), we get a palindrome (6850586).

The spelling of 3440143 in words is "three million, four hundred forty thousand, one hundred forty-three".

Divisors: 1 7 49 70207 491449 3440143