204218838 has 12 divisors (see below), whose sum is σ = 442474188. Its totient is φ = 68072940.

The previous prime is 204218837. The next prime is 204218843. The reversal of 204218838 is 838812402.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204218837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5672728 + ... + 5672763.

It is an arithmetic number, because the mean of its divisors is an integer number (36872849).

Almost surely, 2^204218838 is an apocalyptic number.

204218838 is an abundant number, since it is smaller than the sum of its proper divisors (238255350).

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

204218838 is a wasteful number, since it uses less digits than its factorization.

204218838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11345499 (or 11345496 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 204218838 is about 14290.5156659933. The cubic root of 204218838 is about 588.8869544944.

The spelling of 204218838 in words is "two hundred four million, two hundred eighteen thousand, eight hundred thirty-eight".