20834205 has 32 divisors (see below), whose sum is σ = 39757824. Its totient is φ = 9109056.

The previous prime is 20834167. The next prime is 20834213. The reversal of 20834205 is 50243802.

It is not a de Polignac number, because 20834205 - 2⁸ = 20833949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1899 + ... + 6728.

It is an arithmetic number, because the mean of its divisors is an integer number (1242432).

Almost surely, 2^20834205 is an apocalyptic number.

It is an amenable number.

20834205 is a deficient number, since it is larger than the sum of its proper divisors (18923619).

20834205 is a wasteful number, since it uses less digits than its factorization.

20834205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8665.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 20834205 is about 4564.4501311768. The cubic root of 20834205 is about 275.1644415943.

The spelling of 20834205 in words is "twenty million, eight hundred thirty-four thousand, two hundred five".