6538530 has 32 divisors (see below), whose sum is σ = 15931584. Its totient is φ = 1717056.

The previous prime is 6538517. The next prime is 6538531. The reversal of 6538530 is 358356.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (6538531) 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, 384 + ... + 3636.

It is an arithmetic number, because the mean of its divisors is an integer number (497862).

Almost surely, 2^6538530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6538530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7965792).

6538530 is an abundant number, since it is smaller than the sum of its proper divisors (9393054).

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

6538530 is a wasteful number, since it uses less digits than its factorization.

6538530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 6538530 is about 2557.0549466134. The cubic root of 6538530 is about 186.9935845741.

The spelling of 6538530 in words is "six million, five hundred thirty-eight thousand, five hundred thirty".