Search a number
-
+
68165118 = 2337180331
BaseRepresentation
bin1000001000000…
…01110111111110
311202021010222000
410010001313332
5114422240433
610433003130
71455252060
oct404016776
9152233860
1068165118
113552850a
121a9b34a6
13111785b8
1490a5730
155eb7113
hex4101dfe

68165118 has 32 divisors (see below), whose sum is σ = 173118720. Its totient is φ = 19475640.

The previous prime is 68165117. The next prime is 68165131. The reversal of 68165118 is 81156186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68165113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89788 + ... + 90543.

It is an arithmetic number, because the mean of its divisors is an integer number (5409960).

Almost surely, 268165118 is an apocalyptic number.

68165118 is an abundant number, since it is smaller than the sum of its proper divisors (104953602).

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

68165118 is a wasteful number, since it uses less digits than its factorization.

68165118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180349 (or 180343 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 68165118 is about 8256.2169302896. The cubic root of 68165118 is about 408.4956131141.

The spelling of 68165118 in words is "sixty-eight million, one hundred sixty-five thousand, one hundred eighteen".

Divisors: 1 2 3 6 7 9 14 18 21 27 42 54 63 126 189 378 180331 360662 540993 1081986 1262317 1622979 2524634 3245958 3786951 4868937 7573902 9737874 11360853 22721706 34082559 68165118