445040340 has 192 divisors, whose sum is σ = 1368686592. Its totient is φ = 107712000.

The previous prime is 445040279. The next prime is 445040341. The reversal of 445040340 is 43040544.

It is a self number, because there is not a number n which added to its sum of digits gives 445040340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445040341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4320729 + ... + 4320831.

It is an arithmetic number, because the mean of its divisors is an integer number (7128576).

Almost surely, 2^445040340 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 445040340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684343296).

445040340 is an abundant number, since it is smaller than the sum of its proper divisors (923646252).

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

445040340 is a wasteful number, since it uses less digits than its factorization.

445040340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 445040340 is about 21095.9792377600. The cubic root of 445040340 is about 763.4837411177.

Adding to 445040340 its reverse (43040544), we get a palindrome (488080884).

The spelling of 445040340 in words is "four hundred forty-five million, forty thousand, three hundred forty".