220533450 has 48 divisors (see below), whose sum is σ = 548819040. Its totient is φ = 58605120.

The previous prime is 220533377. The next prime is 220533461. The reversal of 220533450 is 54335022.

It is a self number, because there is not a number n which added to its sum of digits gives 220533450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43656 + ... + 48444.

It is an arithmetic number, because the mean of its divisors is an integer number (11433730).

Almost surely, 2^220533450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220533450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274409520).

220533450 is an abundant number, since it is smaller than the sum of its proper divisors (328285590).

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

220533450 is a wasteful number, since it uses less digits than its factorization.

220533450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111 (or 5106 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 220533450 is about 14850.3686822920. The cubic root of 220533450 is about 604.1686096384.

Adding to 220533450 its reverse (54335022), we get a palindrome (274868472).

The spelling of 220533450 in words is "two hundred twenty million, five hundred thirty-three thousand, four hundred fifty".