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444000223 = 6735318773
BaseRepresentation
bin11010011101101…
…110011111011111
31010221110112210201
4122131232133133
51402131001343
6112020244331
714000640202
oct3235563737
91127415721
10444000223
11208698a37
121048406a7
1370ca8b34
1442d79939
1528ea594d
hex1a76e7df

444000223 has 8 divisors (see below), whose sum is σ = 451927728. Its totient is φ = 436111104.

The previous prime is 444000217. The next prime is 444000247. The reversal of 444000223 is 322000444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-444000223 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 444000223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444006223) 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, 14265 + ... + 33037.

It is an arithmetic number, because the mean of its divisors is an integer number (56490966).

Almost surely, 2444000223 is an apocalyptic number.

444000223 is a deficient number, since it is larger than the sum of its proper divisors (7927505).

444000223 is a wasteful number, since it uses less digits than its factorization.

444000223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19193.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 444000223 is about 21071.3127972606. The cubic root of 444000223 is about 762.8884903061. Note that the first 3 decimals are identical.

Adding to 444000223 its reverse (322000444), we get a palindrome (766000667).

The spelling of 444000223 in words is "four hundred forty-four million, two hundred twenty-three", and thus it is an aban number.

Divisors: 1 67 353 18773 23651 1257791 6626869 444000223