44387140 has 36 divisors (see below), whose sum is σ = 108433836. Its totient is φ = 15218112.

The previous prime is 44387117. The next prime is 44387143. The reversal of 44387140 is 4178344.

It can be written as a sum of positive squares in 2 ways, for example, as 22259524 + 22127616 = 4718^2 + 4704^2 .

It is not an unprimeable number, because it can be changed into a prime (44387143) 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 11 ways as a sum of consecutive naturals, for example, 21667 + ... + 23626.

It is an arithmetic number, because the mean of its divisors is an integer number (3012051).

Almost surely, 2^44387140 is an apocalyptic number.

It is an amenable number.

44387140 is an abundant number, since it is smaller than the sum of its proper divisors (64046696).

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

44387140 is a wasteful number, since it uses less digits than its factorization.

44387140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45316 (or 45307 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 44387140 is about 6662.3674470867. The cubic root of 44387140 is about 354.0672199374.

The spelling of 44387140 in words is "forty-four million, three hundred eighty-seven thousand, one hundred forty".