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444024143 = 2100121143
BaseRepresentation
bin11010011101110…
…100010101001111
31010221111202121122
4122131310111033
51402132233033
6112020551155
714001100013
oct3235642517
91127452548
10444024143
11208704a02
121048524bb
1370cb69a4
1442d84543
1528eaca98
hex1a77454f

444024143 has 4 divisors (see below), whose sum is σ = 444066288. Its totient is φ = 443982000.

The previous prime is 444024083. The next prime is 444024157. The reversal of 444024143 is 341420444.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 444024143 - 220 = 442975567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444024643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10430 + ... + 31572.

It is an arithmetic number, because the mean of its divisors is an integer number (111016572).

Almost surely, 2444024143 is an apocalyptic number.

444024143 is a deficient number, since it is larger than the sum of its proper divisors (42145).

444024143 is a wasteful number, since it uses less digits than its factorization.

444024143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42144.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 444024143 is about 21071.8803859551. The cubic root of 444024143 is about 762.9021899726.

Adding to 444024143 its reverse (341420444), we get a palindrome (785444587).

The spelling of 444024143 in words is "four hundred forty-four million, twenty-four thousand, one hundred forty-three".

Divisors: 1 21001 21143 444024143