442528884 has 72 divisors (see below), whose sum is σ = 1280348160. Its totient is φ = 126245952.

The previous prime is 442528883. The next prime is 442528907. The reversal of 442528884 is 488825244.

442528884 is a `hidden beast` number, since 4 + 42 + 528 + 8 + 84 = 666.

It is a super-3 number, since 3×442528884³ (a number of 27 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442528883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 321622 + ... + 322994.

Almost surely, 2^442528884 is an apocalyptic number.

It is an amenable number.

442528884 is an abundant number, since it is smaller than the sum of its proper divisors (837819276).

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

442528884 is a wasteful number, since it uses less digits than its factorization.

442528884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669 (or 2664 counting only the distinct ones).

The product of its digits is 655360, while the sum is 45.

The square root of 442528884 is about 21036.3705044383. The cubic root of 442528884 is about 762.0448647815.

The spelling of 442528884 in words is "four hundred forty-two million, five hundred twenty-eight thousand, eight hundred eighty-four".