448781544 has 96 divisors (see below), whose sum is σ = 1273808640. Its totient is φ = 142560000.

The previous prime is 448781537. The next prime is 448781561. The reversal of 448781544 is 445187844.

It is a self number, because there is not a number n which added to its sum of digits gives 448781544.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148044 + ... + 151044.

It is an arithmetic number, because the mean of its divisors is an integer number (13268840).

Almost surely, 2^448781544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 448781544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636904320).

448781544 is an abundant number, since it is smaller than the sum of its proper divisors (825027096).

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

448781544 is a wasteful number, since it uses less digits than its factorization.

448781544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111 (or 3104 counting only the distinct ones).

The product of its digits is 573440, while the sum is 45.

The square root of 448781544 is about 21184.4646852357. The cubic root of 448781544 is about 765.6171669647.

The spelling of 448781544 in words is "four hundred forty-eight million, seven hundred eighty-one thousand, five hundred forty-four".