442538288 has 20 divisors (see below), whose sum is σ = 907854840. Its totient is φ = 208253184.

The previous prime is 442538279. The next prime is 442538311. The reversal of 442538288 is 882835244.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813218 + ... + 813761.

It is an arithmetic number, because the mean of its divisors is an integer number (45392742).

Almost surely, 2^442538288 is an apocalyptic number.

It is an amenable number.

442538288 is an abundant number, since it is smaller than the sum of its proper divisors (465316552).

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

442538288 is a wasteful number, since it uses less digits than its factorization.

442538288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627004 (or 1626998 counting only the distinct ones).

The product of its digits is 491520, while the sum is 44.

The square root of 442538288 is about 21036.5940208961. The cubic root of 442538288 is about 762.0502627110.

The spelling of 442538288 in words is "four hundred forty-two million, five hundred thirty-eight thousand, two hundred eighty-eight".