44040240 has 80 divisors (see below), whose sum is σ = 151701600. Its totient is φ = 11743488.

The previous prime is 44040187. The next prime is 44040253. The reversal of 44040240 is 4204044.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8035 + ... + 12354.

It is an arithmetic number, because the mean of its divisors is an integer number (1896270).

Almost surely, 2^44040240 is an apocalyptic number.

44040240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44040240 is an abundant number, since it is smaller than the sum of its proper divisors (107661360).

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

44040240 is a wasteful number, since it uses less digits than its factorization.

44040240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20411 (or 20399 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 44040240 is about 6636.2820916534. The cubic root of 44040240 is about 353.1424228749.

Adding to 44040240 its reverse (4204044), we get a palindrome (48244284).

The spelling of 44040240 in words is "forty-four million, forty thousand, two hundred forty".