448643128 has 16 divisors (see below), whose sum is σ = 848925000. Its totient is φ = 222263136.

The previous prime is 448643099. The next prime is 448643179. The reversal of 448643128 is 821346844.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256378 + ... + 258121.

Almost surely, 2^448643128 is an apocalyptic number.

It is an amenable number.

448643128 is a deficient number, since it is larger than the sum of its proper divisors (400281872).

448643128 is a wasteful number, since it uses less digits than its factorization.

448643128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514614 (or 514610 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The square root of 448643128 is about 21181.1975110002. The cubic root of 448643128 is about 765.5384467320.

The spelling of 448643128 in words is "four hundred forty-eight million, six hundred forty-three thousand, one hundred twenty-eight".