447775128 has 144 divisors (see below), whose sum is σ = 1328535000. Its totient is φ = 141087744.

The previous prime is 447775079. The next prime is 447775151. The reversal of 447775128 is 821577744.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 997048 + ... + 997496.

Almost surely, 2^447775128 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 447775128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664267500).

447775128 is an abundant number, since it is smaller than the sum of its proper divisors (880759872).

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

447775128 is an equidigital number, since it uses as much as digits as its factorization.

447775128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 473 counting only the distinct ones).

The product of its digits is 439040, while the sum is 45.

The square root of 447775128 is about 21160.6977200658. The cubic root of 447775128 is about 765.0444264857.

The spelling of 447775128 in words is "four hundred forty-seven million, seven hundred seventy-five thousand, one hundred twenty-eight".