20354973 has 8 divisors (see below), whose sum is σ = 27178848. Its totient is φ = 13550544.

The previous prime is 20354969. The next prime is 20354989. The reversal of 20354973 is 37945302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20354973 - 2² = 20354969 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2211 + ... + 6752.

It is an arithmetic number, because the mean of its divisors is an integer number (3397356).

Almost surely, 2^20354973 is an apocalyptic number.

It is an amenable number.

20354973 is a deficient number, since it is larger than the sum of its proper divisors (6823875).

20354973 is an equidigital number, since it uses as much as digits as its factorization.

20354973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9723.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 20354973 is about 4511.6485900389. The cubic root of 20354973 is about 273.0382616206.

The spelling of 20354973 in words is "twenty million, three hundred fifty-four thousand, nine hundred seventy-three".