538780 has 48 divisors (see below), whose sum is σ = 1290240. Its totient is φ = 187200.

The previous prime is 538777. The next prime is 538789. The reversal of 538780 is 87835.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6781 + ... + 6859.

It is an arithmetic number, because the mean of its divisors is an integer number (26880).

2⁵³⁸⁷⁸⁰ 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 538780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (645120).

538780 is an abundant number, since it is smaller than the sum of its proper divisors (751460).

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

538780 is a wasteful number, since it uses less digits than its factorization.

538780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 538780 is about 734.0163485918. The cubic root of 538780 is about 81.3711565249.

The spelling of 538780 in words is "five hundred thirty-eight thousand, seven hundred eighty".