44489920 has 56 divisors (see below), whose sum is σ = 108557568. Its totient is φ = 17356800.

The previous prime is 44489789. The next prime is 44489933. The reversal of 44489920 is 2998444.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 11425 + ... + 14815.

It is an arithmetic number, because the mean of its divisors is an integer number (1938528).

Almost surely, 2^44489920 is an apocalyptic number.

44489920 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 44489920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54278784).

44489920 is an abundant number, since it is smaller than the sum of its proper divisors (64067648).

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

44489920 is a wasteful number, since it uses less digits than its factorization.

44489920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449 (or 3439 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 44489920 is about 6670.0764613309. The cubic root of 44489920 is about 354.3402943512.

The spelling of 44489920 in words is "forty-four million, four hundred eighty-nine thousand, nine hundred twenty".