445212 has 36 divisors (see below), whose sum is σ = 1146600. Its totient is φ = 145632.

The previous prime is 445199. The next prime is 445229. The reversal of 445212 is 212544.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 445212.

It is an unprimeable number.

445212 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 11 ways as a sum of consecutive naturals, for example, 2914 + ... + 3062.

It is an arithmetic number, because the mean of its divisors is an integer number (31850).

2⁴⁴⁵²¹² 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 445212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573300).

445212 is an abundant number, since it is smaller than the sum of its proper divisors (701388).

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

445212 is a wasteful number, since it uses less digits than its factorization.

445212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 237 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 445212 is about 667.2420850036. The cubic root of 445212 is about 76.3581891600.

Adding to 445212 its reverse (212544), we get a palindrome (657756).

The spelling of 445212 in words is "four hundred forty-five thousand, two hundred twelve".