44891840 has 112 divisors (see below), whose sum is σ = 124968000. Its totient is φ = 15353856.

The previous prime is 44891839. The next prime is 44891863. The reversal of 44891840 is 4819844.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 44891794 and 44891803.

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, 109556 + ... + 109964.

Almost surely, 2^44891840 is an apocalyptic number.

44891840 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 44891840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62484000).

44891840 is an abundant number, since it is smaller than the sum of its proper divisors (80076160).

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

44891840 is an equidigital number, since it uses as much as digits as its factorization.

44891840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 44891840 is about 6700.1373120258. The cubic root of 44891840 is about 355.4041288054.

The spelling of 44891840 in words is "forty-four million, eight hundred ninety-one thousand, eight hundred forty".