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568065820 = 225724491291
BaseRepresentation
bin100001110110111…
…111111100011100
31110120220201210211
4201312333330130
52130411101240
6132211342204
720035323400
oct4166777434
91416821724
10568065820
11271727293
1213a2b1964
13908c742a
1455633100
1534d10bea
hex21dbff1c

568065820 has 72 divisors (see below), whose sum is σ = 1391871600. Its totient is φ = 194181120.

The previous prime is 568065811. The next prime is 568065821. The reversal of 568065820 is 28560865.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (568065821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 439375 + ... + 440665.

It is an arithmetic number, because the mean of its divisors is an integer number (19331550).

Almost surely, 2568065820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 568065820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (695935800).

568065820 is an abundant number, since it is smaller than the sum of its proper divisors (823805780).

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

568065820 is a wasteful number, since it uses less digits than its factorization.

568065820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763 (or 1754 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 568065820 is about 23834.1314085494. The cubic root of 568065820 is about 828.1955379242.

It can be divided in two parts, 56806 and 5820, that added together give a palindrome (62626).

The spelling of 568065820 in words is "five hundred sixty-eight million, sixty-five thousand, eight hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 449 490 898 980 1291 1796 2245 2582 3143 4490 5164 6286 6455 8980 9037 12572 12910 15715 18074 22001 25820 31430 36148 44002 45185 62860 63259 88004 90370 110005 126518 180740 220010 253036 316295 440020 579659 632590 1159318 1265180 2318636 2898295 4057613 5796590 8115226 11593180 16230452 20288065 28403291 40576130 56806582 81152260 113613164 142016455 284032910 568065820