Search a number
-
+
68795870 = 25111348109
BaseRepresentation
bin1000001100110…
…11110111011110
311210110012012012
410012123313132
5120102431440
610454311222
71463520023
oct406336736
9153405165
1068795870
11359193a0
121b058512
1311339720
1491cb54a
15608de65
hex419bdde

68795870 has 32 divisors (see below), whose sum is σ = 145484640. Its totient is φ = 23091840.

The previous prime is 68795849. The next prime is 68795879. The reversal of 68795870 is 7859786.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68795879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22625 + ... + 25484.

It is an arithmetic number, because the mean of its divisors is an integer number (4546395).

Almost surely, 268795870 is an apocalyptic number.

68795870 is an abundant number, since it is smaller than the sum of its proper divisors (76688770).

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

68795870 is a wasteful number, since it uses less digits than its factorization.

68795870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48140.

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 68795870 is about 8294.3275797379. The cubic root of 68795870 is about 409.7517235706.

The spelling of 68795870 in words is "sixty-eight million, seven hundred ninety-five thousand, eight hundred seventy".

Divisors: 1 2 5 10 11 13 22 26 55 65 110 130 143 286 715 1430 48109 96218 240545 481090 529199 625417 1058398 1250834 2645995 3127085 5291990 6254170 6879587 13759174 34397935 68795870