2000538 has 40 divisors (see below), whose sum is σ = 4586868. Its totient is φ = 651456.

The previous prime is 2000521. The next prime is 2000539. The reversal of 2000538 is 8350002.

It can be written as a sum of positive squares in 2 ways, for example, as 1996569 + 3969 = 1413^2 + 63^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 2000538.

It is not an unprimeable number, because it can be changed into a prime (2000539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8470 + ... + 8702.

2^2000538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2000538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2293434).

2000538 is an abundant number, since it is smaller than the sum of its proper divisors (2586330).

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

2000538 is a wasteful number, since it uses less digits than its factorization.

2000538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2000538 is about 1414.4037613072. The cubic root of 2000538 is about 126.0034012687.

The spelling of 2000538 in words is "two million, five hundred thirty-eight", and thus it is an aban number.