44263440 has 120 divisors (see below), whose sum is σ = 160119960. Its totient is φ = 10893312.

The previous prime is 44263423. The next prime is 44263451. The reversal of 44263440 is 4436244.

It can be written as a sum of positive squares in 4 ways, for example, as 1648656 + 42614784 = 1284^2 + 6528^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6996 + ... + 11724.

It is an arithmetic number, because the mean of its divisors is an integer number (1334333).

Almost surely, 2^44263440 is an apocalyptic number.

44263440 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 44263440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80059980).

44263440 is an abundant number, since it is smaller than the sum of its proper divisors (115856520).

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

44263440 is a wasteful number, since it uses less digits than its factorization.

44263440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4761 (or 4752 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 44263440 is about 6653.0774833907. The cubic root of 44263440 is about 353.7380039800.

Adding to 44263440 its reverse (4436244), we get a palindrome (48699684).

The spelling of 44263440 in words is "forty-four million, two hundred sixty-three thousand, four hundred forty".