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445018023 = 3316482149
BaseRepresentation
bin11010100001100…
…110111110100111
31011000101020222000
4122201212332213
51402411034043
6112054140343
714012406432
oct3241467647
91130336860
10445018023
1120922369a
121050516b3
1371274198
1443162819
15291072d3
hex1a866fa7

445018023 has 8 divisors (see below), whose sum is σ = 659286000. Its totient is φ = 296678664.

The previous prime is 445018009. The next prime is 445018073. The reversal of 445018023 is 320810544.

It is not a de Polignac number, because 445018023 - 212 = 445013927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 16482149 = 445018023 / (4 + 4 + 5 + 0 + 1 + 8 + 0 + 2 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445018073) 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 7 ways as a sum of consecutive naturals, for example, 8241048 + ... + 8241101.

It is an arithmetic number, because the mean of its divisors is an integer number (82410750).

Almost surely, 2445018023 is an apocalyptic number.

445018023 is a deficient number, since it is larger than the sum of its proper divisors (214267977).

445018023 is a wasteful number, since it uses less digits than its factorization.

445018023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16482158 (or 16482152 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 445018023 is about 21095.4502914728. The cubic root of 445018023 is about 763.4709790151.

Adding to 445018023 its reverse (320810544), we get a palindrome (765828567).

The spelling of 445018023 in words is "four hundred forty-five million, eighteen thousand, twenty-three".

Divisors: 1 3 9 27 16482149 49446447 148339341 445018023