445002540 has 96 divisors (see below), whose sum is σ = 1324693440. Its totient is φ = 111230976.

The previous prime is 445002529. The next prime is 445002577. The reversal of 445002540 is 45200544.

It is a self number, because there is not a number n which added to its sum of digits gives 445002540.

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 31 ways as a sum of consecutive naturals, for example, 298116 + ... + 299604.

It is an arithmetic number, because the mean of its divisors is an integer number (13798890).

Almost surely, 2^445002540 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 445002540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (662346720).

445002540 is an abundant number, since it is smaller than the sum of its proper divisors (879690900).

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

445002540 is a wasteful number, since it uses less digits than its factorization.

445002540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811 (or 1809 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 445002540 is about 21095.0833134169. The cubic root of 445002540 is about 763.4621247233.

The spelling of 445002540 in words is "four hundred forty-five million, two thousand, five hundred forty".