44840640 has 112 divisors (see below), whose sum is σ = 153363168. Its totient is φ = 11034624.

The previous prime is 44840599. The next prime is 44840647. The reversal of 44840640 is 4604844.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 44840598 and 44840607.

It is not an unprimeable number, because it can be changed into a prime (44840647) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10684 + ... + 14276.

It is an arithmetic number, because the mean of its divisors is an integer number (1369314).

Almost surely, 2^44840640 is an apocalyptic number.

44840640 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 44840640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76681584).

44840640 is an abundant number, since it is smaller than the sum of its proper divisors (108522528).

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

44840640 is a wasteful number, since it uses less digits than its factorization.

44840640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3626 (or 3616 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 44840640 is about 6696.3154047581. The cubic root of 44840640 is about 355.2689623425.

The spelling of 44840640 in words is "forty-four million, eight hundred forty thousand, six hundred forty".