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6668320120 = 2357112165039
BaseRepresentation
bin1100011010111011…
…00111110101111000
3122012201121202112021
412031131213311320
5102124042220440
63021405124224
7324150533350
oct61535476570
918181552467
106668320120
112912102670
121361259674
13823695667
1447389bb60
1529064d84a
hex18d767d78

6668320120 has 64 divisors (see below), whose sum is σ = 18705945600. Its totient is φ = 2078436480.

The previous prime is 6668320111. The next prime is 6668320157. The reversal of 6668320120 is 210238666.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1079440 + ... + 1085599.

It is an arithmetic number, because the mean of its divisors is an integer number (292280400).

Almost surely, 26668320120 is an apocalyptic number.

It is an amenable number.

6668320120 is an abundant number, since it is smaller than the sum of its proper divisors (12037625480).

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

6668320120 is a wasteful number, since it uses less digits than its factorization.

6668320120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165068 (or 2165064 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 6668320120 is about 81659.7827574872. The cubic root of 6668320120 is about 1882.2276408162.

Adding to 6668320120 its reverse (210238666), we get a palindrome (6878558786).

The spelling of 6668320120 in words is "six billion, six hundred sixty-eight million, three hundred twenty thousand, one hundred twenty".

Divisors: 1 2 4 5 7 8 10 11 14 20 22 28 35 40 44 55 56 70 77 88 110 140 154 220 280 308 385 440 616 770 1540 3080 2165039 4330078 8660156 10825195 15155273 17320312 21650390 23815429 30310546 43300780 47630858 60621092 75776365 86601560 95261716 119077145 121242184 151552730 166708003 190523432 238154290 303105460 333416006 476308580 606210920 666832012 833540015 952617160 1333664024 1667080030 3334160060 6668320120