220335444 has 96 divisors (see below), whose sum is σ = 670575360. Its totient is φ = 61243776.

The previous prime is 220335443. The next prime is 220335461. The reversal of 220335444 is 444533022.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220335443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24034 + ... + 31910.

It is an arithmetic number, because the mean of its divisors is an integer number (6985160).

Almost surely, 2^220335444 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 220335444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335287680).

220335444 is an abundant number, since it is smaller than the sum of its proper divisors (450239916).

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

220335444 is a wasteful number, since it uses less digits than its factorization.

220335444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7934 (or 7926 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 220335444 is about 14843.7004820227. The cubic root of 220335444 is about 603.9877378620.

Adding to 220335444 its reverse (444533022), we get a palindrome (664868466).

The spelling of 220335444 in words is "two hundred twenty million, three hundred thirty-five thousand, four hundred forty-four".