223442838 has 48 divisors (see below), whose sum is σ = 506709216. Its totient is φ = 71026560.

The previous prime is 223442837. The next prime is 223442867. The reversal of 223442838 is 838244322.

It is a happy number.

223442838 is a `hidden beast` number, since 223 + 4 + 428 + 3 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223442837) 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, 188608 + ... + 189788.

It is an arithmetic number, because the mean of its divisors is an integer number (10556442).

Almost surely, 2^223442838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223442838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253354608).

223442838 is an abundant number, since it is smaller than the sum of its proper divisors (283266378).

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

223442838 is a wasteful number, since it uses less digits than its factorization.

223442838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669 (or 1666 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The square root of 223442838 is about 14948.0044822043. The cubic root of 223442838 is about 606.8138429839.

The spelling of 223442838 in words is "two hundred twenty-three million, four hundred forty-two thousand, eight hundred thirty-eight".