538828 has 6 divisors (see below), whose sum is σ = 942956. Its totient is φ = 269412.

The previous prime is 538823. The next prime is 538829. The reversal of 538828 is 828835.

It is a happy number.

It is a super-2 number, since 2×538828² = 580671227168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 538793 and 538802.

It is not an unprimeable number, because it can be changed into a prime (538823) by changing a digit.

538828 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67350 + ... + 67357.

2⁵³⁸⁸²⁸ is an apocalyptic number.

It is an amenable number.

538828 is a deficient number, since it is larger than the sum of its proper divisors (404128).

538828 is a wasteful number, since it uses less digits than its factorization.

538828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134711 (or 134709 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 538828 is about 734.0490446830. The cubic root of 538828 is about 81.3735729098.

It can be divided in two parts, 53882 and 8, that multiplied together give a triangular number (431056 = T₉₂₈).

The spelling of 538828 in words is "five hundred thirty-eight thousand, eight hundred twenty-eight".