445534020 has 120 divisors (see below), whose sum is σ = 1435624344. Its totient is φ = 115582464.

The previous prime is 445533973. The next prime is 445534069. The reversal of 445534020 is 20435544.

It can be written as a sum of positive squares in 4 ways, for example, as 34012224 + 411521796 = 5832^2 + 20286^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 56224 + ... + 63656.

Almost surely, 2^445534020 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 445534020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717812172).

445534020 is an abundant number, since it is smaller than the sum of its proper divisors (990090324).

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

445534020 is a wasteful number, since it uses less digits than its factorization.

445534020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7491 (or 7480 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 445534020 is about 21107.6768025285. The cubic root of 445534020 is about 763.7659457742.

Adding to 445534020 its reverse (20435544), we get a palindrome (465969564).

The spelling of 445534020 in words is "four hundred forty-five million, five hundred thirty-four thousand, twenty".