220438608 has 80 divisors (see below), whose sum is σ = 645583680. Its totient is φ = 64253952.

The previous prime is 220438583. The next prime is 220438619. The reversal of 220438608 is 806834022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2560 + ... + 21152.

It is an arithmetic number, because the mean of its divisors is an integer number (8069796).

Almost surely, 2^220438608 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 220438608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322791840).

220438608 is an abundant number, since it is smaller than the sum of its proper divisors (425145072).

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

220438608 is a wasteful number, since it uses less digits than its factorization.

220438608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18636 (or 18630 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 220438608 is about 14847.1750848436. The cubic root of 220438608 is about 604.0819881978.

The spelling of 220438608 in words is "two hundred twenty million, four hundred thirty-eight thousand, six hundred eight".