447320 has 32 divisors (see below), whose sum is σ = 1030320. Its totient is φ = 174720.

The previous prime is 447319. The next prime is 447323. The reversal of 447320 is 23744.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 447292 and 447301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2015 + ... + 2225.

2⁴⁴⁷³²⁰ is an apocalyptic number.

447320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 447320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515160).

447320 is an abundant number, since it is smaller than the sum of its proper divisors (583000).

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

447320 is a wasteful number, since it uses less digits than its factorization.

447320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 447320 is about 668.8198561646. The cubic root of 447320 is about 76.4785136234.

447320 divided by its sum of digits (20) gives a triangular number (22366 = T₂₁₁).

It can be divided in two parts, 447 and 320, that added together give a palindrome (767).

The spelling of 447320 in words is "four hundred forty-seven thousand, three hundred twenty", and thus it is an iban number.