2126538 has 48 divisors (see below), whose sum is σ = 4932096. Its totient is φ = 660960.

The previous prime is 2126491. The next prime is 2126539. The reversal of 2126538 is 8356212.

2126538 is a `hidden beast` number, since 2 + 1 + 2 + 653 + 8 = 666.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2126539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20595 + ... + 20697.

It is an arithmetic number, because the mean of its divisors is an integer number (102752).

2^2126538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2126538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2466048).

2126538 is an abundant number, since it is smaller than the sum of its proper divisors (2805558).

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

2126538 is a wasteful number, since it uses less digits than its factorization.

2126538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 176 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2126538 is about 1458.2654079419. The cubic root of 2126538 is about 128.5950887674.

The spelling of 2126538 in words is "two million, one hundred twenty-six thousand, five hundred thirty-eight".