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20512327 = 1112491493
BaseRepresentation
bin100111000111…
…1111001000111
31102121010121211
41032033321013
520222343302
62011352251
7336231463
oct116177107
942533554
1020512327
1110640240
126a52687
134332694
142a1d4a3
151c02ad7
hex138fe47

20512327 has 8 divisors (see below), whose sum is σ = 22410000. Its totient is φ = 18620160.

The previous prime is 20512321. The next prime is 20512337. The reversal of 20512327 is 72321502.

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 20512327 - 27 = 20512199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20512298 and 20512307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20512321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12993 + ... + 14485.

It is an arithmetic number, because the mean of its divisors is an integer number (2801250).

Almost surely, 220512327 is an apocalyptic number.

20512327 is a deficient number, since it is larger than the sum of its proper divisors (1897673).

20512327 is a wasteful number, since it uses less digits than its factorization.

20512327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20512327 is about 4529.0536539105. The cubic root of 20512327 is about 273.7400299393.

Adding to 20512327 its reverse (72321502), we get a palindrome (92833829).

The spelling of 20512327 in words is "twenty million, five hundred twelve thousand, three hundred twenty-seven".

Divisors: 1 11 1249 1493 13739 16423 1864757 20512327