222548864 has 32 divisors (see below), whose sum is σ = 445638000. Its totient is φ = 110702592.

The previous prime is 222548863. The next prime is 222548873. The reversal of 222548864 is 468845222.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222548863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21104 + ... + 29840.

Almost surely, 2^222548864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222548864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222819000).

222548864 is an abundant number, since it is smaller than the sum of its proper divisors (223089136).

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

222548864 is an equidigital number, since it uses as much as digits as its factorization.

222548864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8950 (or 8938 counting only the distinct ones).

The product of its digits is 245760, while the sum is 41.

The square root of 222548864 is about 14918.0717252599. The cubic root of 222548864 is about 606.0034927384.

The spelling of 222548864 in words is "two hundred twenty-two million, five hundred forty-eight thousand, eight hundred sixty-four".