450670220 has 96 divisors (see below), whose sum is σ = 1270757376. Its totient is φ = 129657600.

The previous prime is 450670193. The next prime is 450670277. The reversal of 450670220 is 22076054.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 450670220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8765 + ... + 31275.

It is an arithmetic number, because the mean of its divisors is an integer number (13237056).

Almost surely, 2^450670220 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 450670220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (635378688).

450670220 is an abundant number, since it is smaller than the sum of its proper divisors (820087156).

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

450670220 is a wasteful number, since it uses less digits than its factorization.

450670220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22551 (or 22549 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 450670220 is about 21228.9947948555. The cubic root of 450670220 is about 766.6896850892.

The spelling of 450670220 in words is "four hundred fifty million, six hundred seventy thousand, two hundred twenty".