2097838 has 4 divisors (see below), whose sum is σ = 3146760. Its totient is φ = 1048918.

The previous prime is 2097833. The next prime is 2097857. The reversal of 2097838 is 8387902.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2097797 and 2097806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2097833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524458 + ... + 524461.

It is an arithmetic number, because the mean of its divisors is an integer number (786690).

2^2097838 is an apocalyptic number.

2097838 is a deficient number, since it is larger than the sum of its proper divisors (1048922).

2097838 is a wasteful number, since it uses less digits than its factorization.

2097838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048921.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2097838 is about 1448.3915216543. The cubic root of 2097838 is about 128.0139551842.

Subtracting 2097838 from its reverse (8387902), we obtain a square (6290064 = 2508²).

The spelling of 2097838 in words is "two million, ninety-seven thousand, eight hundred thirty-eight".