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6868920 = 233557241
BaseRepresentation
bin11010001100111110111000
3110220222101110
4122030332320
53224301140
6403120320
7112246002
oct32147670
913828343
106868920
1139717a3
1223730a0
131566666
14cab372
1590a380
hex68cfb8

6868920 has 32 divisors (see below), whose sum is σ = 20607120. Its totient is φ = 1831680.

The previous prime is 6868913. The next prime is 6868921. The reversal of 6868920 is 298686.

6868920 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28501 + ... + 28740.

Almost surely, 26868920 is an apocalyptic number.

6868920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6868920 is an abundant number, since it is smaller than the sum of its proper divisors (13738200).

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

6868920 is a wasteful number, since it uses less digits than its factorization.

6868920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57255 (or 57251 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 6868920 is about 2620.8624534683. The cubic root of 6868920 is about 190.0915532917.

The spelling of 6868920 in words is "six million, eight hundred sixty-eight thousand, nine hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 57241 114482 171723 228964 286205 343446 457928 572410 686892 858615 1144820 1373784 1717230 2289640 3434460 6868920