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2020320413 = 9412146993
BaseRepresentation
bin111100001101011…
…1010010010011101
312012210120220120222
41320122322102131
513114200223123
6532250251125
7101031303656
oct17032722235
95183526528
102020320413
119474666a1
12484726aa5
13262740587
1415246852d
15bc5786c8
hex786ba49d

2020320413 has 4 divisors (see below), whose sum is σ = 2022468348. Its totient is φ = 2018172480.

The previous prime is 2020320389. The next prime is 2020320451. The reversal of 2020320413 is 3140230202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 479522404 + 1540798009 = 21898^2 + 39253^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020320413 - 228 = 1751884957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020320391 and 2020320400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020320493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072556 + ... + 1074437.

It is an arithmetic number, because the mean of its divisors is an integer number (505617087).

Almost surely, 22020320413 is an apocalyptic number.

It is an amenable number.

2020320413 is a deficient number, since it is larger than the sum of its proper divisors (2147935).

2020320413 is an equidigital number, since it uses as much as digits as its factorization.

2020320413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147934.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2020320413 is about 44947.9745149879. The cubic root of 2020320413 is about 1264.1736989984.

Adding to 2020320413 its reverse (3140230202), we get a palindrome (5160550615).

The spelling of 2020320413 in words is "two billion, twenty million, three hundred twenty thousand, four hundred thirteen".

Divisors: 1 941 2146993 2020320413