44122640 has 40 divisors (see below), whose sum is σ = 103754520. Its totient is φ = 17447936.

The previous prime is 44122609. The next prime is 44122651. The reversal of 44122640 is 4622144.

It can be written as a sum of positive squares in 4 ways, for example, as 456976 + 43665664 = 676^2 + 6608^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4022 + ... + 10218.

It is an arithmetic number, because the mean of its divisors is an integer number (2593863).

Almost surely, 2^44122640 is an apocalyptic number.

44122640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44122640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51877260).

44122640 is an abundant number, since it is smaller than the sum of its proper divisors (59631880).

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

44122640 is a wasteful number, since it uses less digits than its factorization.

44122640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6299 (or 6293 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 44122640 is about 6642.4874858745. The cubic root of 44122640 is about 353.3625307149.

Adding to 44122640 its reverse (4622144), we get a palindrome (48744784).

The spelling of 44122640 in words is "forty-four million, one hundred twenty-two thousand, six hundred forty".