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6868340 = 2251720201
BaseRepresentation
bin11010001100110101110100
3110220221120222
4122030311310
53224241330
6403113512
7112244213
oct32146564
913827528
106868340
113971316
122372898
13156630b
14cab07a
1590a0e5
hex68cd74

6868340 has 24 divisors (see below), whose sum is σ = 15272712. Its totient is φ = 2585600.

The previous prime is 6868319. The next prime is 6868363. The reversal of 6868340 is 438686.

It can be written as a sum of positive squares in 4 ways, for example, as 45796 + 6822544 = 214^2 + 2612^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6868340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9761 + ... + 10440.

It is an arithmetic number, because the mean of its divisors is an integer number (636363).

Almost surely, 26868340 is an apocalyptic number.

It is an amenable number.

6868340 is an abundant number, since it is smaller than the sum of its proper divisors (8404372).

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

6868340 is a wasteful number, since it uses less digits than its factorization.

6868340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20227 (or 20225 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 6868340 is about 2620.7518005336. The cubic root of 6868340 is about 190.0862028046.

The spelling of 6868340 in words is "six million, eight hundred sixty-eight thousand, three hundred forty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 20201 40402 80804 101005 202010 343417 404020 686834 1373668 1717085 3434170 6868340