450343220 has 48 divisors (see below), whose sum is σ = 992718720. Its totient is φ = 171278976.

The previous prime is 450343217. The next prime is 450343253. The reversal of 450343220 is 22343054.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 76751 + ... + 82409.

It is an arithmetic number, because the mean of its divisors is an integer number (20681640).

Almost surely, 2^450343220 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 450343220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496359360).

450343220 is an abundant number, since it is smaller than the sum of its proper divisors (542375500).

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

450343220 is a wasteful number, since it uses less digits than its factorization.

450343220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5864 (or 5862 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 450343220 is about 21221.2916666258. The cubic root of 450343220 is about 766.5042071225.

Adding to 450343220 its reverse (22343054), we get a palindrome (472686274).

The spelling of 450343220 in words is "four hundred fifty million, three hundred forty-three thousand, two hundred twenty".