Search a number
-
+
68105229 = 373330971
BaseRepresentation
bin1000000111100…
…11010000001101
311202011002210220
410003303100031
5114413331404
610431421553
71454612343
oct403632015
9152132726
1068105229
1135497515
121a9848b9
131115726a
14908b993
155ea44d9
hex40f340d

68105229 has 8 divisors (see below), whose sum is σ = 90933792. Its totient is φ = 45340080.

The previous prime is 68105227. The next prime is 68105237. The reversal of 68105229 is 92250186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68105229 - 21 = 68105227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68105229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68105227) 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 7 ways as a sum of consecutive naturals, for example, 13287 + ... + 17684.

It is an arithmetic number, because the mean of its divisors is an integer number (11366724).

Almost surely, 268105229 is an apocalyptic number.

It is an amenable number.

68105229 is a deficient number, since it is larger than the sum of its proper divisors (22828563).

68105229 is a wasteful number, since it uses less digits than its factorization.

68105229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31707.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 68105229 is about 8252.5892300538. The cubic root of 68105229 is about 408.3759450556.

The spelling of 68105229 in words is "sixty-eight million, one hundred five thousand, two hundred twenty-nine".

Divisors: 1 3 733 2199 30971 92913 22701743 68105229