448129220 has 48 divisors (see below), whose sum is σ = 1173287808. Its totient is φ = 139676160.

The previous prime is 448129219. The next prime is 448129243. The reversal of 448129220 is 22921844.

It is a happy 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, 143957 + ... + 147036.

It is an arithmetic number, because the mean of its divisors is an integer number (24443496).

Almost surely, 2^448129220 is an apocalyptic number.

It is an amenable number.

448129220 is an abundant number, since it is smaller than the sum of its proper divisors (725158588).

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

448129220 is a wasteful number, since it uses less digits than its factorization.

448129220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291020 (or 291018 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 448129220 is about 21169.0628040072. The cubic root of 448129220 is about 765.2460341819.

The spelling of 448129220 in words is "four hundred forty-eight million, one hundred twenty-nine thousand, two hundred twenty".