44133540 has 72 divisors (see below), whose sum is σ = 135851520. Its totient is φ = 10697280.

The previous prime is 44133533. The next prime is 44133559. The reversal of 44133540 is 4533144.

It is a self number, because there is not a number n which added to its sum of digits gives 44133540.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4221 + ... + 10299.

Almost surely, 2^44133540 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 44133540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67925760).

44133540 is an abundant number, since it is smaller than the sum of its proper divisors (91717980).

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

44133540 is a wasteful number, since it uses less digits than its factorization.

44133540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6113 (or 6100 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 44133540 is about 6643.3079109733. The cubic root of 44133540 is about 353.3916263935.

Adding to 44133540 its reverse (4533144), we get a palindrome (48666684).

The spelling of 44133540 in words is "forty-four million, one hundred thirty-three thousand, five hundred forty".