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2020316720 = 245174673181
BaseRepresentation
bin111100001101011…
…1001011000110000
312012210120201112012
41320122321120300
513114200113340
6532250222052
7101031260132
oct17032713060
95183521465
102020316720
11947463944
12484724928
1326273b9a6
14152467052
15bc577565
hex786b9630

2020316720 has 80 divisors (see below), whose sum is σ = 4985761248. Its totient is φ = 758722560.

The previous prime is 2020316719. The next prime is 2020316741. The reversal of 2020316720 is 276130202.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×20203167202 = 8163359298223116800, which contains 22 as substring.

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, 633530 + ... + 636710.

Almost surely, 22020316720 is an apocalyptic number.

2020316720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2020316720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2492880624).

2020316720 is an abundant number, since it is smaller than the sum of its proper divisors (2965444528).

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

2020316720 is a wasteful number, since it uses less digits than its factorization.

2020316720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3678 (or 3672 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 2020316720 is about 44947.9334341413. The cubic root of 2020316720 is about 1264.1729287252.

Adding to 2020316720 its reverse (276130202), we get a palindrome (2296446922).

The spelling of 2020316720 in words is "two billion, twenty million, three hundred sixteen thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 16 17 20 34 40 68 80 85 136 170 272 340 467 680 934 1360 1868 2335 3181 3736 4670 6362 7472 7939 9340 12724 15878 15905 18680 25448 31756 31810 37360 39695 50896 54077 63512 63620 79390 108154 127024 127240 158780 216308 254480 270385 317560 432616 540770 635120 865232 1081540 1485527 2163080 2971054 4326160 5942108 7427635 11884216 14855270 23768432 25253959 29710540 50507918 59421080 101015836 118842160 126269795 202031672 252539590 404063344 505079180 1010158360 2020316720