445513216 has 80 divisors (see below), whose sum is σ = 960719760. Its totient is φ = 205701120.

The previous prime is 445513199. The next prime is 445513223. The reversal of 445513216 is 612315544.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398290 + ... + 399406.

It is an arithmetic number, because the mean of its divisors is an integer number (12008997).

Almost surely, 2^445513216 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 445513216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480359880).

445513216 is an abundant number, since it is smaller than the sum of its proper divisors (515206544).

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

445513216 is a wasteful number, since it uses less digits than its factorization.

445513216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195 (or 1179 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 445513216 is about 21107.1839902911. The cubic root of 445513216 is about 763.7540576928.

It can be divided in two parts, 4455 and 13216, that added together give a palindrome (17671).

The spelling of 445513216 in words is "four hundred forty-five million, five hundred thirteen thousand, two hundred sixteen".