44003540 has 48 divisors (see below), whose sum is σ = 106106112. Its totient is φ = 15015936.

The previous prime is 44003521. The next prime is 44003543. The reversal of 44003540 is 4530044.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44003543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35369 + ... + 36591.

It is an arithmetic number, because the mean of its divisors is an integer number (2210544).

Almost surely, 2^44003540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44003540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53053056).

44003540 is an abundant number, since it is smaller than the sum of its proper divisors (62102572).

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

44003540 is a wasteful number, since it uses less digits than its factorization.

44003540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496 (or 1494 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 44003540 is about 6633.5164128839. The cubic root of 44003540 is about 353.0443010311.

Adding to 44003540 its reverse (4530044), we get a palindrome (48533584).

The spelling of 44003540 in words is "forty-four million, three thousand, five hundred forty".