445329728 has 14 divisors (see below), whose sum is σ = 883701306. Its totient is φ = 222664832.

The previous prime is 445329721. The next prime is 445329751. The reversal of 445329728 is 827923544.

It can be written as a sum of positive squares in only one way, i.e., 430645504 + 14684224 = 20752^2 + 3832^2 .

It is a super-3 number, since 3×445329728³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445329721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3479075 + ... + 3479202.

Almost surely, 2^445329728 is an apocalyptic number.

It is an amenable number.

445329728 is a deficient number, since it is larger than the sum of its proper divisors (438371578).

445329728 is an equidigital number, since it uses as much as digits as its factorization.

445329728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6958289 (or 6958279 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The square root of 445329728 is about 21102.8369656783. The cubic root of 445329728 is about 763.6491906593.

The spelling of 445329728 in words is "four hundred forty-five million, three hundred twenty-nine thousand, seven hundred twenty-eight".