44240640 has 144 divisors (see below), whose sum is σ = 145254816. Its totient is φ = 11468800.

The previous prime is 44240629. The next prime is 44240653. The reversal of 44240640 is 4604244.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 44240640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157300 + ... + 157580.

It is an arithmetic number, because the mean of its divisors is an integer number (1008714).

Almost surely, 2^44240640 is an apocalyptic number.

44240640 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 44240640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72627408).

44240640 is an abundant number, since it is smaller than the sum of its proper divisors (101014176).

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

44240640 is a wasteful number, since it uses less digits than its factorization.

44240640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 44240640 is about 6651.3637699347. The cubic root of 44240640 is about 353.6772569942.

Adding to 44240640 its reverse (4604244), we get a palindrome (48844884).

The spelling of 44240640 in words is "forty-four million, two hundred forty thousand, six hundred forty".