447220 has 24 divisors (see below), whose sum is σ = 957600. Its totient is φ = 175392.

The previous prime is 447217. The next prime is 447221. The reversal of 447220 is 22744.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447221) by changing a digit.

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, 991 + ... + 1369.

It is an arithmetic number, because the mean of its divisors is an integer number (39900).

2⁴⁴⁷²²⁰ is an apocalyptic number.

It is an amenable number.

447220 is an abundant number, since it is smaller than the sum of its proper divisors (510380).

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

447220 is a wasteful number, since it uses less digits than its factorization.

447220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 447220 is about 668.7450934399. The cubic root of 447220 is about 76.4728141828.

Adding to 447220 its reverse (22744), we get a palindrome (469964).

The spelling of 447220 in words is "four hundred forty-seven thousand, two hundred twenty", and thus it is an iban number.