445141220 has 12 divisors (see below), whose sum is σ = 934796604. Its totient is φ = 178056480.

The previous prime is 445141211. The next prime is 445141231. The reversal of 445141220 is 22141544.

It can be written as a sum of positive squares in 2 ways, for example, as 48972004 + 396169216 = 6998^2 + 19904^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11128511 + ... + 11128550.

It is an arithmetic number, because the mean of its divisors is an integer number (77899717).

Almost surely, 2^445141220 is an apocalyptic number.

It is an amenable number.

445141220 is an abundant number, since it is smaller than the sum of its proper divisors (489655384).

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

445141220 is a wasteful number, since it uses less digits than its factorization.

445141220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22257070 (or 22257068 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 445141220 is about 21098.3700792265. The cubic root of 445141220 is about 763.5414245935.

Adding to 445141220 its reverse (22141544), we get a palindrome (467282764).

The spelling of 445141220 in words is "four hundred forty-five million, one hundred forty-one thousand, two hundred twenty".