445302440 has 128 divisors (see below), whose sum is σ = 1137784320. Its totient is φ = 155443200.

The previous prime is 445302439. The next prime is 445302457. The reversal of 445302440 is 44203544.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1261304 + ... + 1261656.

It is an arithmetic number, because the mean of its divisors is an integer number (8888940).

Almost surely, 2^445302440 is an apocalyptic number.

445302440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445302440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568892160).

445302440 is an abundant number, since it is smaller than the sum of its proper divisors (692481880).

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

445302440 is a wasteful number, since it uses less digits than its factorization.

445302440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 445302440 is about 21102.1904076330. The cubic root of 445302440 is about 763.6335925654.

Adding to 445302440 its reverse (44203544), we get a palindrome (489505984).

The spelling of 445302440 in words is "four hundred forty-five million, three hundred two thousand, four hundred forty".