445728216 has 32 divisors (see below), whose sum is σ = 1119614400. Its totient is φ = 147870240.

The previous prime is 445728209. The next prime is 445728221. The reversal of 445728216 is 612827544.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38946 + ... + 49073.

It is an arithmetic number, because the mean of its divisors is an integer number (34987950).

Almost surely, 2^445728216 is an apocalyptic number.

It is an amenable number.

445728216 is an abundant number, since it is smaller than the sum of its proper divisors (673886184).

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

445728216 is a wasteful number, since it uses less digits than its factorization.

445728216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88239 (or 88235 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 445728216 is about 21112.2764286564. The cubic root of 445728216 is about 763.8768978307.

The spelling of 445728216 in words is "four hundred forty-five million, seven hundred twenty-eight thousand, two hundred sixteen".