442870384 has 20 divisors (see below), whose sum is σ = 936067320. Its totient is φ = 201304640.

The previous prime is 442870369. The next prime is 442870403. The reversal of 442870384 is 483078244.

It is a super-2 number, since 2×442870384² = 392268354048614912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257979 + ... + 1258330.

It is an arithmetic number, because the mean of its divisors is an integer number (46803366).

Almost surely, 2^442870384 is an apocalyptic number.

442870384 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

442870384 is an abundant number, since it is smaller than the sum of its proper divisors (493196936).

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

442870384 is a wasteful number, since it uses less digits than its factorization.

442870384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516328 (or 2516322 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 40.

The square root of 442870384 is about 21044.4858335860. The cubic root of 442870384 is about 762.2408379841.

The spelling of 442870384 in words is "four hundred forty-two million, eight hundred seventy thousand, three hundred eighty-four".