20834893 has 4 divisors (see below), whose sum is σ = 20871580. Its totient is φ = 20798208.

The previous prime is 20834881. The next prime is 20834899. The reversal of 20834893 is 39843802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39843802 = 2 ⋅19921901.

It can be written as a sum of positive squares in 2 ways, for example, as 20766249 + 68644 = 4557^2 + 262^2 .

It is a cyclic number.

It is not a de Polignac number, because 20834893 - 2⁵ = 20834861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20834899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17478 + ... + 18631.

It is an arithmetic number, because the mean of its divisors is an integer number (5217895).

Almost surely, 2^20834893 is an apocalyptic number.

It is an amenable number.

20834893 is a deficient number, since it is larger than the sum of its proper divisors (36687).

20834893 is an equidigital number, since it uses as much as digits as its factorization.

20834893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36686.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 20834893 is about 4564.5254956019. The cubic root of 20834893 is about 275.1674704444.

The spelling of 20834893 in words is "twenty million, eight hundred thirty-four thousand, eight hundred ninety-three".