445420 has 12 divisors (see below), whose sum is σ = 935424. Its totient is φ = 178160.

The previous prime is 445363. The next prime is 445427. The reversal of 445420 is 24544.

It is not an unprimeable number, because it can be changed into a prime (445427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11116 + ... + 11155.

It is an arithmetic number, because the mean of its divisors is an integer number (77952).

2⁴⁴⁵⁴²⁰ is an apocalyptic number.

It is an amenable number.

445420 is an abundant number, since it is smaller than the sum of its proper divisors (490004).

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

445420 is a wasteful number, since it uses less digits than its factorization.

445420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22280 (or 22278 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 445420 is about 667.3979322713. The cubic root of 445420 is about 76.3700786498.

Adding to 445420 its reverse (24544), we get a palindrome (469964).

The spelling of 445420 in words is "four hundred forty-five thousand, four hundred twenty".