44225640 has 48 divisors (see below), whose sum is σ = 143734500. Its totient is φ = 11793408.

The previous prime is 44225627. The next prime is 44225641. The reversal of 44225640 is 4652244.

It can be written as a sum of positive squares in 2 ways, for example, as 43797924 + 427716 = 6618^2 + 654^2 .

It is not an unprimeable number, because it can be changed into a prime (44225641) 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 11 ways as a sum of consecutive naturals, for example, 61065 + ... + 61784.

Almost surely, 2^44225640 is an apocalyptic number.

44225640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44225640 is an abundant number, since it is smaller than the sum of its proper divisors (99508860).

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

44225640 is a wasteful number, since it uses less digits than its factorization.

44225640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122866 (or 122859 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 44225640 is about 6650.2360860348. The cubic root of 44225640 is about 353.6372804888.

Adding to 44225640 its reverse (4652244), we get a palindrome (48877884).

The spelling of 44225640 in words is "forty-four million, two hundred twenty-five thousand, six hundred forty".