538290 has 24 divisors (see below), whose sum is σ = 1399788. Its totient is φ = 143520.

The previous prime is 538283. The next prime is 538297. The reversal of 538290 is 92835.

It is an interprime number because it is at equal distance from previous prime (538283) and next prime (538297).

It can be written as a sum of positive squares in 2 ways, for example, as 463761 + 74529 = 681^2 + 273^2 .

It is a super-2 number, since 2×538290² = 579512248200, which contains 22 as substring.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (538297) by changing a digit.

538290 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 in 11 ways as a sum of consecutive naturals, for example, 2901 + ... + 3080.

2⁵³⁸²⁹⁰ is an apocalyptic number.

538290 is an abundant number, since it is smaller than the sum of its proper divisors (861498).

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

538290 is a wasteful number, since it uses less digits than its factorization.

538290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5994 (or 5991 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 538290 is about 733.6824926356. The cubic root of 538290 is about 81.3464810481.

Subtracting from 538290 its product of nonzero digits (2160), we obtain a triangular number (536130 = T₁₀₃₅).

It can be divided in two parts, 538 and 290, that added together give a palindrome (828).

The spelling of 538290 in words is "five hundred thirty-eight thousand, two hundred ninety".