442537228 has 24 divisors (see below), whose sum is σ = 903140000. Its totient is φ = 189658224.

The previous prime is 442537201. The next prime is 442537247. The reversal of 442537228 is 822735244.

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 7 ways as a sum of consecutive naturals, for example, 159903 + ... + 162646.

Almost surely, 2^442537228 is an apocalyptic number.

It is an amenable number.

442537228 is an abundant number, since it is smaller than the sum of its proper divisors (460602772).

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

442537228 is a wasteful number, since it uses less digits than its factorization.

442537228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322574 (or 322558 counting only the distinct ones).

The product of its digits is 107520, while the sum is 37.

The square root of 442537228 is about 21036.5688266884. The cubic root of 442537228 is about 762.0496542710.

The spelling of 442537228 in words is "four hundred forty-two million, five hundred thirty-seven thousand, two hundred twenty-eight".