44168640 has 112 divisors (see below), whose sum is σ = 141671040. Its totient is φ = 11658240.

The previous prime is 44168627. The next prime is 44168651. The reversal of 44168640 is 4686144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133275 + ... + 133605.

It is an arithmetic number, because the mean of its divisors is an integer number (1264920).

Almost surely, 2^44168640 is an apocalyptic number.

44168640 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 44168640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70835520).

44168640 is an abundant number, since it is smaller than the sum of its proper divisors (97502400).

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

44168640 is a wasteful number, since it uses less digits than its factorization.

44168640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 44168640 is about 6645.9491421467. The cubic root of 44168640 is about 353.4852872779.

The spelling of 44168640 in words is "forty-four million, one hundred sixty-eight thousand, six hundred forty".