448509428 has 6 divisors (see below), whose sum is σ = 784891506. Its totient is φ = 224254712.

The previous prime is 448509427. The next prime is 448509431. The reversal of 448509428 is 824905844.

It can be written as a sum of positive squares in only one way, i.e., 308986084 + 139523344 = 17578^2 + 11812^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448509427) by changing a digit.

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 as a sum of consecutive naturals, namely, 56063675 + ... + 56063682.

It is an arithmetic number, because the mean of its divisors is an integer number (130815251).

Almost surely, 2^448509428 is an apocalyptic number.

It is an amenable number.

448509428 is a deficient number, since it is larger than the sum of its proper divisors (336382078).

448509428 is a wasteful number, since it uses less digits than its factorization.

448509428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112127361 (or 112127359 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 448509428 is about 21178.0411747640. The cubic root of 448509428 is about 765.4623932180.

The spelling of 448509428 in words is "four hundred forty-eight million, five hundred nine thousand, four hundred twenty-eight".