44481920 has 64 divisors (see below), whose sum is σ = 121543200. Its totient is φ = 15249408.

The previous prime is 44481917. The next prime is 44481937. The reversal of 44481920 is 2918444.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 485 + ... + 9444.

Almost surely, 2^44481920 is an apocalyptic number.

44481920 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 44481920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60771600).

44481920 is an abundant number, since it is smaller than the sum of its proper divisors (77061280).

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

44481920 is an equidigital number, since it uses as much as digits as its factorization.

44481920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9955 (or 9943 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 44481920 is about 6669.4767410945. The cubic root of 44481920 is about 354.3190543918.

The spelling of 44481920 in words is "forty-four million, four hundred eighty-one thousand, nine hundred twenty".