442336 has 24 divisors (see below), whose sum is σ = 910224. Its totient is φ = 211200.

The previous prime is 442333. The next prime is 442363. The reversal of 442336 is 633244.

It is a super-2 number, since 2×442336² = 391322273792, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436 + ... + 1036.

It is an arithmetic number, because the mean of its divisors is an integer number (37926).

2⁴⁴²³³⁶ is an apocalyptic number.

442336 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455112).

442336 is an abundant number, since it is smaller than the sum of its proper divisors (467888).

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

442336 is a wasteful number, since it uses less digits than its factorization.

442336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 626 counting only the distinct ones).

The product of its digits is 1728, while the sum is 22.

The square root of 442336 is about 665.0834534102. The cubic root of 442336 is about 76.1934131804.

The spelling of 442336 in words is "four hundred forty-two thousand, three hundred thirty-six".