442890872 has 8 divisors (see below), whose sum is σ = 830420400. Its totient is φ = 221445432.

The previous prime is 442890863. The next prime is 442890887. The reversal of 442890872 is 278098244.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27680672 + ... + 27680687.

It is an arithmetic number, because the mean of its divisors is an integer number (103802550).

Almost surely, 2^442890872 is an apocalyptic number.

It is an amenable number.

442890872 is a deficient number, since it is larger than the sum of its proper divisors (387529528).

442890872 is a wasteful number, since it uses less digits than its factorization.

442890872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55361365 (or 55361361 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 442890872 is about 21044.9726063020. The cubic root of 442890872 is about 762.2525920247.

The spelling of 442890872 in words is "four hundred forty-two million, eight hundred ninety thousand, eight hundred seventy-two".