445638324 has 12 divisors (see below), whose sum is σ = 1039822784. Its totient is φ = 148546104.

The previous prime is 445638311. The next prime is 445638359. The reversal of 445638324 is 423836544.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18568252 + ... + 18568275.

Almost surely, 2^445638324 is an apocalyptic number.

It is an amenable number.

445638324 is an abundant number, since it is smaller than the sum of its proper divisors (594184460).

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

445638324 is a wasteful number, since it uses less digits than its factorization.

445638324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37136534 (or 37136532 counting only the distinct ones).

The product of its digits is 276480, while the sum is 39.

The square root of 445638324 is about 21110.1474177704. The cubic root of 445638324 is about 763.8255428897.

The spelling of 445638324 in words is "four hundred forty-five million, six hundred thirty-eight thousand, three hundred twenty-four".