20236973 has 2 divisors, whose sum is σ = 20236974. Its totient is φ = 20236972.

The previous prime is 20236949. The next prime is 20237003. The reversal of 20236973 is 37963202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15856324 + 4380649 = 3982^2 + 2093^2 .

It is a cyclic number.

It is not a de Polignac number, because 20236973 - 2⁸ = 20236717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20236943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10118486 + 10118487.

It is an arithmetic number, because the mean of its divisors is an integer number (10118487).

Almost surely, 2^20236973 is an apocalyptic number.

It is an amenable number.

20236973 is a deficient number, since it is larger than the sum of its proper divisors (1).

20236973 is an equidigital number, since it uses as much as digits as its factorization.

20236973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 20236973 is about 4498.5523226923. The cubic root of 20236973 is about 272.5096279178.

The spelling of 20236973 in words is "twenty million, two hundred thirty-six thousand, nine hundred seventy-three".