538432 has 28 divisors (see below), whose sum is σ = 1097280. Its totient is φ = 262016.

The previous prime is 538423. The next prime is 538457. The reversal of 538432 is 234835.

It is a junction number, because it is equal to n+sod(n) for n = 538397 and 538406.

It is a congruent number.

It is an unprimeable number.

538432 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2919 + ... + 3097.

2⁵³⁸⁴³² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (548640).

538432 is an abundant number, since it is smaller than the sum of its proper divisors (558848).

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

538432 is a wasteful number, since it uses less digits than its factorization.

538432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 228 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 538432 is about 733.7792583604. The cubic root of 538432 is about 81.3536334410.

The spelling of 538432 in words is "five hundred thirty-eight thousand, four hundred thirty-two".