44012540 has 72 divisors (see below), whose sum is σ = 109485600. Its totient is φ = 14762880.

The previous prime is 44012533. The next prime is 44012561. The reversal of 44012540 is 4521044.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30761 + ... + 32159.

Almost surely, 2^44012540 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 44012540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54742800).

44012540 is an abundant number, since it is smaller than the sum of its proper divisors (65473060).

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

44012540 is a wasteful number, since it uses less digits than its factorization.

44012540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 44012540 is about 6634.1947514374. The cubic root of 44012540 is about 353.0683686562.

Adding to 44012540 its reverse (4521044), we get a palindrome (48533584).

The spelling of 44012540 in words is "forty-four million, twelve thousand, five hundred forty".