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20022013 = 111939431
BaseRepresentation
bin100110001100…
…0001011111101
31101200020001001
41030120023331
520111201023
61553050301
7332120134
oct114301375
941606031
1020022013
1110335920
126856991
1341c045b
14293291b
151b576ad
hex13182fd

20022013 has 8 divisors (see below), whose sum is σ = 21957696. Its totient is φ = 18105600.

The previous prime is 20022011. The next prime is 20022017. The reversal of 20022013 is 31022002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20022013 - 21 = 20022011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022011) 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, 2593 + ... + 6838.

It is an arithmetic number, because the mean of its divisors is an integer number (2744712).

Almost surely, 220022013 is an apocalyptic number.

It is an amenable number.

20022013 is a deficient number, since it is larger than the sum of its proper divisors (1935683).

20022013 is a wasteful number, since it uses less digits than its factorization.

20022013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9635.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20022013 is about 4474.5964063813. The cubic root of 20022013 is about 271.5413126032.

Adding to 20022013 its reverse (31022002), we get a palindrome (51044015).

The spelling of 20022013 in words is "twenty million, twenty-two thousand, thirteen".

Divisors: 1 11 193 2123 9431 103741 1820183 20022013