44253440 has 144 divisors (see below), whose sum is σ = 132451200. Its totient is φ = 13762560.

The previous prime is 44253427. The next prime is 44253467. The reversal of 44253440 is 4435244.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98336 + ... + 98784.

It is an arithmetic number, because the mean of its divisors is an integer number (919800).

Almost surely, 2^44253440 is an apocalyptic number.

44253440 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 44253440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66225600).

44253440 is an abundant number, since it is smaller than the sum of its proper divisors (88197760).

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

44253440 is a wasteful number, since it uses less digits than its factorization.

44253440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 474 counting only the distinct ones).

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

The square root of 44253440 is about 6652.3259090336. The cubic root of 44253440 is about 353.7113631340.

Adding to 44253440 its reverse (4435244), we get a palindrome (48688684).

The spelling of 44253440 in words is "forty-four million, two hundred fifty-three thousand, four hundred forty".