2040538 has 4 divisors (see below), whose sum is σ = 3060810. Its totient is φ = 1020268.

The previous prime is 2040497. The next prime is 2040539. The reversal of 2040538 is 8350402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8350402 = 2 ⋅4175201.

It can be written as a sum of positive squares in only one way, i.e., 1046529 + 994009 = 1023^2 + 997^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2040539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510133 + ... + 510136.

2^2040538 is an apocalyptic number.

2040538 is a deficient number, since it is larger than the sum of its proper divisors (1020272).

2040538 is a wasteful number, since it uses less digits than its factorization.

2040538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020271.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2040538 is about 1428.4740109641. The cubic root of 2040538 is about 126.8376622559.

The spelling of 2040538 in words is "two million, forty thousand, five hundred thirty-eight".