538890 has 64 divisors (see below), whose sum is σ = 1492992. Its totient is φ = 123200.

The previous prime is 538877. The next prime is 538921. The reversal of 538890 is 98835.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable 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 31 ways as a sum of consecutive naturals, for example, 7555 + ... + 7625.

It is an arithmetic number, because the mean of its divisors is an integer number (23328).

2⁵³⁸⁸⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (746496).

538890 is an abundant number, since it is smaller than the sum of its proper divisors (954102).

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

538890 is a wasteful number, since it uses less digits than its factorization.

538890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 538890 is about 734.0912749788. The cubic root of 538890 is about 81.3766938612.

The spelling of 538890 in words is "five hundred thirty-eight thousand, eight hundred ninety".