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444012012 = 223212333667
BaseRepresentation
bin11010011101110…
…001010111101100
31010221111010222100
4122131301113230
51402131341022
6112020415100
714001016443
oct3235612754
91127433870
10444012012
112086a6884
12104847490
1370cb1302
1442d7dd5a
1528ea91ac
hex1a7715ec

444012012 has 18 divisors (see below), whose sum is σ = 1122363788. Its totient is φ = 148003992.

The previous prime is 444011999. The next prime is 444012013. The reversal of 444012012 is 210210444.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

444012012 is a modest number, since divided by 12012 gives 444 as remainder.

It is not an unprimeable number, because it can be changed into a prime (444012013) 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 5 ways as a sum of consecutive naturals, for example, 6166798 + ... + 6166869.

Almost surely, 2444012012 is an apocalyptic number.

It is an amenable number.

444012012 is an abundant number, since it is smaller than the sum of its proper divisors (678351776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444012012 is a wasteful number, since it uses less digits than its factorization.

444012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12333677 (or 12333672 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 444012012 is about 21071.5925359238. The cubic root of 444012012 is about 762.8952422643.

Adding to 444012012 its reverse (210210444), we get a palindrome (654222456).

The spelling of 444012012 in words is "four hundred forty-four million, twelve thousand, twelve".

Divisors: 1 2 3 4 6 9 12 18 36 12333667 24667334 37001001 49334668 74002002 111003003 148004004 222006006 444012012