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6868312 = 231178049
BaseRepresentation
bin11010001100110101011000
3110220221112221
4122030311120
53224241222
6403113424
7112244143
oct32146530
913827487
106868312
1139712a0
122372874
1315662b9
14cab05a
1590a0c7
hex68cd58

6868312 has 16 divisors (see below), whose sum is σ = 14049000. Its totient is φ = 3121920.

The previous prime is 6868307. The next prime is 6868319. The reversal of 6868312 is 2138686.

6868312 = T83 + T84 + ... + T346.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868319) 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 3 ways as a sum of consecutive naturals, for example, 38937 + ... + 39112.

Almost surely, 26868312 is an apocalyptic number.

It is an amenable number.

6868312 is an abundant number, since it is smaller than the sum of its proper divisors (7180688).

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

6868312 is a wasteful number, since it uses less digits than its factorization.

6868312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78066 (or 78062 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 6868312 is about 2620.7464585495. The cubic root of 6868312 is about 190.0859444976.

It can be divided in two parts, 686 and 8312, that added together give a palindrome (8998).

The spelling of 6868312 in words is "six million, eight hundred sixty-eight thousand, three hundred twelve".

Divisors: 1 2 4 8 11 22 44 88 78049 156098 312196 624392 858539 1717078 3434156 6868312