Search a number
-
+
68276868 = 22311517249
BaseRepresentation
bin1000001000111…
…01001010000100
311202110211020220
410010131022010
5114434324433
610435224340
71456225632
oct404351204
9152424226
1068276868
11355a4470
121aa480b0
13111b741a
1490d4352
155eda2b3
hex411d284

68276868 has 24 divisors (see below), whose sum is σ = 173796000. Its totient is φ = 20689920.

The previous prime is 68276867. The next prime is 68276869. The reversal of 68276868 is 86867286.

It is an interprime number because it is at equal distance from previous prime (68276867) and next prime (68276869).

It is a self number, because there is not a number n which added to its sum of digits gives 68276868.

It is not an unprimeable number, because it can be changed into a prime (68276867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258493 + ... + 258756.

It is an arithmetic number, because the mean of its divisors is an integer number (7241500).

Almost surely, 268276868 is an apocalyptic number.

It is an amenable number.

68276868 is an abundant number, since it is smaller than the sum of its proper divisors (105519132).

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

68276868 is a wasteful number, since it uses less digits than its factorization.

68276868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517267 (or 517265 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The square root of 68276868 is about 8262.9817862561. The cubic root of 68276868 is about 408.7187206844.

It can be divided in two parts, 6827 and 6868, that added together give a triangular number (13695 = T165).

The spelling of 68276868 in words is "sixty-eight million, two hundred seventy-six thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 517249 1034498 1551747 2068996 3103494 5689739 6206988 11379478 17069217 22758956 34138434 68276868