223205238 has 48 divisors (see below), whose sum is σ = 503595456. Its totient is φ = 71383680.

The previous prime is 223205237. The next prime is 223205243. The reversal of 223205238 is 832502322.

223205238 is a `hidden beast` number, since 223 + 205 + 238 = 666.

It is a super-3 number, since 3×223205238³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223205231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46323 + ... + 50913.

It is an arithmetic number, because the mean of its divisors is an integer number (10491572).

Almost surely, 2^223205238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223205238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251797728).

223205238 is an abundant number, since it is smaller than the sum of its proper divisors (280390218).

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

223205238 is a wasteful number, since it uses less digits than its factorization.

223205238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709 (or 4706 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 223205238 is about 14940.0548191765. The cubic root of 223205238 is about 606.5986796707.

The spelling of 223205238 in words is "two hundred twenty-three million, two hundred five thousand, two hundred thirty-eight".