44143440 has 160 divisors (see below), whose sum is σ = 155990016. Its totient is φ = 10222080.

The previous prime is 44143433. The next prime is 44143471. The reversal of 44143440 is 4434144.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 44143440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60357 + ... + 61083.

Almost surely, 2^44143440 is an apocalyptic number.

44143440 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 44143440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77995008).

44143440 is an abundant number, since it is smaller than the sum of its proper divisors (111846576).

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

44143440 is a wasteful number, since it uses less digits than its factorization.

44143440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 44143440 is about 6644.0529799212. The cubic root of 44143440 is about 353.4180485925.

Adding to 44143440 its reverse (4434144), we get a palindrome (48577584).

The spelling of 44143440 in words is "forty-four million, one hundred forty-three thousand, four hundred forty".