44020440 has 48 divisors (see below), whose sum is σ = 143067600. Its totient is φ = 11738688.

The previous prime is 44020439. The next prime is 44020451. The reversal of 44020440 is 4402044.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60780 + ... + 61499.

It is an arithmetic number, because the mean of its divisors is an integer number (2980575).

Almost surely, 2^44020440 is an apocalyptic number.

44020440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44020440 is an abundant number, since it is smaller than the sum of its proper divisors (99047160).

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

44020440 is a wasteful number, since it uses less digits than its factorization.

44020440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122296 (or 122289 counting only the distinct ones).

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

The square root of 44020440 is about 6634.7901247892. The cubic root of 44020440 is about 353.0894919788.

Adding to 44020440 its reverse (4402044), we get a palindrome (48422484).

The spelling of 44020440 in words is "forty-four million, twenty thousand, four hundred forty".