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68351200 = 255285439
BaseRepresentation
bin1000001001011…
…11010011100000
311202121121012221
410010233103200
5114444214300
610441000424
71456655431
oct404572340
9152547187
1068351200
11356452a5
121aa83114
13112121c8
149113488
15600231a
hex412f4e0

68351200 has 36 divisors (see below), whose sum is σ = 166864320. Its totient is φ = 27340160.

The previous prime is 68351197. The next prime is 68351201. The reversal of 68351200 is 215386.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68351201) 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 5 ways as a sum of consecutive naturals, for example, 41920 + ... + 43519.

It is an arithmetic number, because the mean of its divisors is an integer number (4635120).

Almost surely, 268351200 is an apocalyptic number.

It is an amenable number.

68351200 is an abundant number, since it is smaller than the sum of its proper divisors (98513120).

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

68351200 is a wasteful number, since it uses less digits than its factorization.

68351200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85459 (or 85446 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 68351200 is about 8267.4784547648. The cubic root of 68351200 is about 408.8669888677.

Adding to 68351200 its reverse (215386), we get a palindrome (68566586).

The spelling of 68351200 in words is "sixty-eight million, three hundred fifty-one thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 200 400 800 85439 170878 341756 427195 683512 854390 1367024 1708780 2135975 2734048 3417560 4271950 6835120 8543900 13670240 17087800 34175600 68351200