445340140 has 96 divisors (see below), whose sum is σ = 1106985600. Its totient is φ = 147308544.

The previous prime is 445340117. The next prime is 445340149. The reversal of 445340140 is 41043544.

It is not an unprimeable number, because it can be changed into a prime (445340149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 771532 + ... + 772108.

It is an arithmetic number, because the mean of its divisors is an integer number (11531100).

Almost surely, 2^445340140 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 445340140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (553492800).

445340140 is an abundant number, since it is smaller than the sum of its proper divisors (661645460).

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

445340140 is a wasteful number, since it uses less digits than its factorization.

445340140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 445340140 is about 21103.0836609250. The cubic root of 445340140 is about 763.6551420947.

Adding to 445340140 its reverse (41043544), we get a palindrome (486383684).

The spelling of 445340140 in words is "four hundred forty-five million, three hundred forty thousand, one hundred forty".