445228 has 12 divisors (see below), whose sum is σ = 890512. Its totient is φ = 190800.

The previous prime is 445199. The next prime is 445229. The reversal of 445228 is 822544.

It is a happy number.

445228 is an admirable number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (445229) by changing a digit.

445228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7923 + ... + 7978.

2⁴⁴⁵²²⁸ is an apocalyptic number.

It is an amenable number.

445228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

445228 is a wasteful number, since it uses less digits than its factorization.

445228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15912 (or 15910 counting only the distinct ones).

The product of its digits is 2560, while the sum is 25.

The square root of 445228 is about 667.2540745473. The cubic root of 445228 is about 76.3591038676.

It can be divided in two parts, 44 and 5228, that multiplied together give a palindrome (230032).

The spelling of 445228 in words is "four hundred forty-five thousand, two hundred twenty-eight".