204213340 has 12 divisors (see below), whose sum is σ = 428848056. Its totient is φ = 81685328.

The previous prime is 204213329. The next prime is 204213371. The reversal of 204213340 is 43312402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5105314 + ... + 5105353.

It is an arithmetic number, because the mean of its divisors is an integer number (35737338).

Almost surely, 2^204213340 is an apocalyptic number.

204213340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204213340 is an abundant number, since it is smaller than the sum of its proper divisors (224634716).

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

204213340 is a wasteful number, since it uses less digits than its factorization.

204213340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10210676 (or 10210674 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 204213340 is about 14290.3232993519. The cubic root of 204213340 is about 588.8816697558.

Adding to 204213340 its reverse (43312402), we get a palindrome (247525742).

The spelling of 204213340 in words is "two hundred four million, two hundred thirteen thousand, three hundred forty".