447928 has 32 divisors (see below), whose sum is σ = 932400. Its totient is φ = 200448.

The previous prime is 447907. The next prime is 447943. The reversal of 447928 is 829744.

It is a happy number.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 447893 and 447902.

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 7 ways as a sum of consecutive naturals, for example, 6100 + ... + 6172.

2⁴⁴⁷⁹²⁸ 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 447928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466200).

447928 is an abundant number, since it is smaller than the sum of its proper divisors (484472).

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

447928 is a wasteful number, since it uses less digits than its factorization.

447928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 147 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 447928 is about 669.2742337787. The cubic root of 447928 is about 76.5131479530.

The spelling of 447928 in words is "four hundred forty-seven thousand, nine hundred twenty-eight".