445140320 has 24 divisors (see below), whose sum is σ = 1051644384. Its totient is φ = 178056064.

The previous prime is 445140317. The next prime is 445140329. The reversal of 445140320 is 23041544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445140329) by changing a digit.

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, 1390904 + ... + 1391223.

It is an arithmetic number, because the mean of its divisors is an integer number (43818516).

Almost surely, 2^445140320 is an apocalyptic number.

445140320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

445140320 is an abundant number, since it is smaller than the sum of its proper divisors (606504064).

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

445140320 is a wasteful number, since it uses less digits than its factorization.

445140320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782142 (or 2782134 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 445140320 is about 21098.3487505539. The cubic root of 445140320 is about 763.5409100094.

Adding to 445140320 its reverse (23041544), we get a palindrome (468181864).

The spelling of 445140320 in words is "four hundred forty-five million, one hundred forty thousand, three hundred twenty".