44090640 has 240 divisors, whose sum is σ = 170614080. Its totient is φ = 10091520.

The previous prime is 44090603. The next prime is 44090677. The reversal of 44090640 is 4609044.

It is an interprime number because it is at equal distance from previous prime (44090603) and next prime (44090677).

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150334 + ... + 150626.

It is an arithmetic number, because the mean of its divisors is an integer number (710892).

Almost surely, 2^44090640 is an apocalyptic number.

44090640 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 44090640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85307040).

44090640 is an abundant number, since it is smaller than the sum of its proper divisors (126523440).

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

44090640 is a wasteful number, since it uses less digits than its factorization.

44090640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 44090640 is about 6640.0783127912. The cubic root of 44090640 is about 353.2770845154.

Adding to 44090640 its reverse (4609044), we get a palindrome (48699684).

The spelling of 44090640 in words is "forty-four million, ninety thousand, six hundred forty".