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68180112 = 243271121343
BaseRepresentation
bin1000001000001…
…01100010010000
311202021220112100
410010011202100
5114423230422
610433200400
71455343560
oct404054220
9152256470
1068180112
1135538800
121aa00100
1311182380
1490aada0
155ebb7ac
hex4105890

68180112 has 360 divisors, whose sum is σ = 264135872. Its totient is φ = 15966720.

The previous prime is 68180111. The next prime is 68180153. The reversal of 68180112 is 21108186.

It is not an unprimeable number, because it can be changed into a prime (68180111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1585563 + ... + 1585605.

Almost surely, 268180112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68180112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132067936).

68180112 is an abundant number, since it is smaller than the sum of its proper divisors (195955760).

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

68180112 is a wasteful number, since it uses less digits than its factorization.

68180112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 68180112 is about 8257.1249233616. The cubic root of 68180112 is about 408.5255626169.

Adding to 68180112 its reverse (21108186), we get a palindrome (89288298).

The spelling of 68180112 in words is "sixty-eight million, one hundred eighty thousand, one hundred twelve".