445045140 has 36 divisors (see below), whose sum is σ = 1349970804. Its totient is φ = 118678656.

The previous prime is 445045099. The next prime is 445045163. The reversal of 445045140 is 41540544.

It can be written as a sum of positive squares in 2 ways, for example, as 187635204 + 257409936 = 13698^2 + 16044^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1236057 + ... + 1236416.

It is an arithmetic number, because the mean of its divisors is an integer number (37499189).

Almost surely, 2^445045140 is an apocalyptic number.

It is an amenable number.

445045140 is an abundant number, since it is smaller than the sum of its proper divisors (904925664).

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

445045140 is a wasteful number, since it uses less digits than its factorization.

445045140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472488 (or 2472483 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 445045140 is about 21096.0930032080. The cubic root of 445045140 is about 763.4864859691.

Adding to 445045140 its reverse (41540544), we get a palindrome (486585684).

The spelling of 445045140 in words is "four hundred forty-five million, forty-five thousand, one hundred forty".