44487728 has 40 divisors (see below), whose sum is σ = 89577600. Its totient is φ = 21381120.

The previous prime is 44487713. The next prime is 44487739. The reversal of 44487728 is 82778444.

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 7 ways as a sum of consecutive naturals, for example, 127298 + ... + 127646.

It is an arithmetic number, because the mean of its divisors is an integer number (2239440).

Almost surely, 2^44487728 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 44487728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44788800).

44487728 is an abundant number, since it is smaller than the sum of its proper divisors (45089872).

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

44487728 is a wasteful number, since it uses less digits than its factorization.

44487728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 639 counting only the distinct ones).

The product of its digits is 401408, while the sum is 44.

The square root of 44487728 is about 6669.9121433494. The cubic root of 44487728 is about 354.3344748556.

The spelling of 44487728 in words is "forty-four million, four hundred eighty-seven thousand, seven hundred twenty-eight".