205352238 has 72 divisors (see below), whose sum is σ = 517461048. Its totient is φ = 54145728.

The previous prime is 205352237. The next prime is 205352243. The reversal of 205352238 is 832253502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205352237) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 47620 + ... + 51752.

It is an arithmetic number, because the mean of its divisors is an integer number (7186959).

Almost surely, 2^205352238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205352238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258730524).

205352238 is an abundant number, since it is smaller than the sum of its proper divisors (312108810).

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

205352238 is a wasteful number, since it uses less digits than its factorization.

205352238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178 (or 4158 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 205352238 is about 14330.1164684730. The cubic root of 205352238 is about 589.9743721512.

The spelling of 205352238 in words is "two hundred five million, three hundred fifty-two thousand, two hundred thirty-eight".