445532240 has 60 divisors (see below), whose sum is σ = 1062064092. Its totient is φ = 173813760.

The previous prime is 445532237. The next prime is 445532251. The reversal of 445532240 is 42235544.

It can be written as a sum of positive squares in 6 ways, for example, as 61842496 + 383689744 = 7864^2 + 19588^2 .

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 132824 + ... + 136136.

Almost surely, 2^445532240 is an apocalyptic number.

445532240 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 445532240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531032046).

445532240 is an abundant number, since it is smaller than the sum of its proper divisors (616531852).

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

445532240 is a wasteful number, since it uses less digits than its factorization.

445532240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408 (or 3361 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 445532240 is about 21107.6346377324. The cubic root of 445532240 is about 763.7649286389.

Adding to 445532240 its reverse (42235544), we get a palindrome (487767784).

The spelling of 445532240 in words is "four hundred forty-five million, five hundred thirty-two thousand, two hundred forty".