448281638 has 32 divisors (see below), whose sum is σ = 827781120. Its totient is φ = 177835680.

The previous prime is 448281637. The next prime is 448281683. The reversal of 448281638 is 836182844.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448281637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12473 + ... + 32436.

It is an arithmetic number, because the mean of its divisors is an integer number (25868160).

Almost surely, 2^448281638 is an apocalyptic number.

448281638 is a deficient number, since it is larger than the sum of its proper divisors (379499482).

448281638 is a wasteful number, since it uses less digits than its factorization.

448281638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44972.

The product of its digits is 294912, while the sum is 44.

The square root of 448281638 is about 21172.6625156120. The cubic root of 448281638 is about 765.3327830062.

The spelling of 448281638 in words is "four hundred forty-eight million, two hundred eighty-one thousand, six hundred thirty-eight".