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19200168 = 23321373281
BaseRepresentation
bin100100100111…
…1100010101000
31100010110200100
41021033202220
514403401133
61523305400
7322125111
oct111174250
940113610
1019200168
11a924409
12651b260
133c93360
14279b208
151a43e13
hex124f8a8

19200168 has 96 divisors (see below), whose sum is σ = 56969640. Its totient is φ = 5806080.

The previous prime is 19200163. The next prime is 19200179. The reversal of 19200168 is 86100291.

It can be written as a sum of positive squares in 4 ways, for example, as 15350724 + 3849444 = 3918^2 + 1962^2 .

It is not an unprimeable number, because it can be changed into a prime (19200163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68188 + ... + 68468.

Almost surely, 219200168 is an apocalyptic number.

19200168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19200168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28484820).

19200168 is an abundant number, since it is smaller than the sum of its proper divisors (37769472).

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

19200168 is a wasteful number, since it uses less digits than its factorization.

19200168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 19200168 is about 4381.7996302889. The cubic root of 19200168 is about 267.7739610357.

The spelling of 19200168 in words is "nineteen million, two hundred thousand, one hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 13 18 24 26 36 39 52 72 73 78 104 117 146 156 219 234 281 292 312 438 468 562 584 657 843 876 936 949 1124 1314 1686 1752 1898 2248 2529 2628 2847 3372 3653 3796 5058 5256 5694 6744 7306 7592 8541 10116 10959 11388 14612 17082 20232 20513 21918 22776 29224 32877 34164 41026 43836 61539 65754 68328 82052 87672 123078 131508 164104 184617 246156 263016 266669 369234 492312 533338 738468 800007 1066676 1476936 1600014 2133352 2400021 3200028 4800042 6400056 9600084 19200168