20835923 has 2 divisors, whose sum is σ = 20835924. Its totient is φ = 20835922.

The previous prime is 20835917. The next prime is 20835929. The reversal of 20835923 is 32953802.

It is a balanced prime because it is at equal distance from previous prime (20835917) and next prime (20835929).

It is a cyclic number.

It is not a de Polignac number, because 20835923 - 2¹⁰ = 20834899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20835923.

It is not a weakly prime, because it can be changed into another prime (20835929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10417961 + 10417962.

It is an arithmetic number, because the mean of its divisors is an integer number (10417962).

Almost surely, 2^20835923 is an apocalyptic number.

20835923 is a deficient number, since it is larger than the sum of its proper divisors (1).

20835923 is an equidigital number, since it uses as much as digits as its factorization.

20835923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 20835923 is about 4564.6383208311. The cubic root of 20835923 is about 275.1720047901.

The spelling of 20835923 in words is "twenty million, eight hundred thirty-five thousand, nine hundred twenty-three".