44640228 has 24 divisors (see below), whose sum is σ = 104767488. Its totient is φ = 14793376.

The previous prime is 44640223. The next prime is 44640229. The reversal of 44640228 is 82204644.

44640228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 44640195 and 44640204.

It is not an unprimeable number, because it can be changed into a prime (44640223) 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 7 ways as a sum of consecutive naturals, for example, 8676 + ... + 12827.

It is an arithmetic number, because the mean of its divisors is an integer number (4365312).

Almost surely, 2^44640228 is an apocalyptic number.

It is an amenable number.

44640228 is an abundant number, since it is smaller than the sum of its proper divisors (60127260).

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

44640228 is a wasteful number, since it uses less digits than its factorization.

44640228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21683 (or 21681 counting only the distinct ones).

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

The square root of 44640228 is about 6681.3342978779. The cubic root of 44640228 is about 354.7388888637.

The spelling of 44640228 in words is "forty-four million, six hundred forty thousand, two hundred twenty-eight".