442648 has 8 divisors (see below), whose sum is σ = 829980. Its totient is φ = 221320.

The previous prime is 442633. The next prime is 442691. The reversal of 442648 is 846244.

It is a tau number, because it is divible by the number of its divisors (8).

It is a d-powerful number, because it can be written as 4³ + 4⁷ + 6³ + 2¹⁷ + 4⁹ + 8⁵ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27658 + ... + 27673.

2⁴⁴²⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

442648 is a deficient number, since it is larger than the sum of its proper divisors (387332).

442648 is a wasteful number, since it uses less digits than its factorization.

442648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55337 (or 55333 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

The square root of 442648 is about 665.3179690945. The cubic root of 442648 is about 76.2113232140.

The spelling of 442648 in words is "four hundred forty-two thousand, six hundred forty-eight".