44937640 has 128 divisors (see below), whose sum is σ = 117573120. Its totient is φ = 15308800.

The previous prime is 44937619. The next prime is 44937643. The reversal of 44937640 is 4673944.

44937640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 44937640.

It is not an unprimeable number, because it can be changed into a prime (44937643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 847854 + ... + 847906.

It is an arithmetic number, because the mean of its divisors is an integer number (918540).

Almost surely, 2^44937640 is an apocalyptic number.

44937640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

44937640 is the 4240-th heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44937640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58786560).

44937640 is an abundant number, since it is smaller than the sum of its proper divisors (72635480).

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

44937640 is a wasteful number, since it uses less digits than its factorization.

44937640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 44937640 is about 6703.5542811258. The cubic root of 44937640 is about 355.5249523718.

The spelling of 44937640 in words is "forty-four million, nine hundred thirty-seven thousand, six hundred forty".