450247220 has 12 divisors (see below), whose sum is σ = 945519204. Its totient is φ = 180098880.

The previous prime is 450247219. The next prime is 450247253. The reversal of 450247220 is 22742054.

It can be written as a sum of positive squares in 2 ways, for example, as 294396964 + 155850256 = 17158^2 + 12484^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 450247220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11256161 + ... + 11256200.

It is an arithmetic number, because the mean of its divisors is an integer number (78793267).

Almost surely, 2^450247220 is an apocalyptic number.

It is an amenable number.

450247220 is an abundant number, since it is smaller than the sum of its proper divisors (495271984).

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

450247220 is a wasteful number, since it uses less digits than its factorization.

450247220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22512370 (or 22512368 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 450247220 is about 21219.0296667873. The cubic root of 450247220 is about 766.4497378275.

Adding to 450247220 its reverse (22742054), we get a palindrome (472989274).

The spelling of 450247220 in words is "four hundred fifty million, two hundred forty-seven thousand, two hundred twenty".