438522 has 32 divisors (see below), whose sum is σ = 1026432. Its totient is φ = 122304.

The previous prime is 438521. The next prime is 438523. The reversal of 438522 is 225834.

It is an interprime number because it is at equal distance from previous prime (438521) and next prime (438523).

It is a junction number, because it is equal to n+sod(n) for n = 438492 and 438501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438521) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2128 + ... + 2324.

It is an arithmetic number, because the mean of its divisors is an integer number (32076).

2⁴³⁸⁵²² is an apocalyptic number.

438522 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 438522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513216).

438522 is an abundant number, since it is smaller than the sum of its proper divisors (587910).

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

438522 is a wasteful number, since it uses less digits than its factorization.

438522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262.

The product of its digits is 1920, while the sum is 24.

The square root of 438522 is about 662.2099365005. The cubic root of 438522 is about 75.9737905931.

The spelling of 438522 in words is "four hundred thirty-eight thousand, five hundred twenty-two".