44031440 has 40 divisors (see below), whose sum is σ = 103683840. Its totient is φ = 17387136.

The previous prime is 44031419. The next prime is 44031469. The reversal of 44031440 is 4413044.

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

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2837 + ... + 9803.

It is an arithmetic number, because the mean of its divisors is an integer number (2592096).

Almost surely, 2^44031440 is an apocalyptic number.

44031440 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 44031440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51841920).

44031440 is an abundant number, since it is smaller than the sum of its proper divisors (59652400).

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

44031440 is a wasteful number, since it uses less digits than its factorization.

44031440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7059 (or 7053 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 44031440 is about 6635.6190366838. The cubic root of 44031440 is about 353.1188999912.

Adding to 44031440 its reverse (4413044), we get a palindrome (48444484).

The spelling of 44031440 in words is "forty-four million, thirty-one thousand, four hundred forty".