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204212013 = 389764839
BaseRepresentation
bin11000010110000…
…00011100101101
3112020021001012220
430023000130231
5404234241023
632132545553
75026526205
oct1413003455
9466231186
10204212013
11a52aa565
12584822b9
1333400515
141d19b405
1512ddc3e3
hexc2c072d

204212013 has 8 divisors (see below), whose sum is σ = 275342400. Its totient is φ = 134611488.

The previous prime is 204212011. The next prime is 204212033. The reversal of 204212013 is 310212402.

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

It is not a de Polignac number, because 204212013 - 21 = 204212011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204211983 and 204212001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204212011) 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, 382153 + ... + 382686.

It is an arithmetic number, because the mean of its divisors is an integer number (34417800).

Almost surely, 2204212013 is an apocalyptic number.

It is an amenable number.

204212013 is a deficient number, since it is larger than the sum of its proper divisors (71130387).

204212013 is an equidigital number, since it uses as much as digits as its factorization.

204212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764931.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 204212013 is about 14290.2768692562. The cubic root of 204212013 is about 588.8803942145.

Adding to 204212013 its reverse (310212402), we get a palindrome (514424415).

The spelling of 204212013 in words is "two hundred four million, two hundred twelve thousand, thirteen".

Divisors: 1 3 89 267 764839 2294517 68070671 204212013