20572205 has 8 divisors (see below), whose sum is σ = 24736992. Its totient is φ = 16424208.

The previous prime is 20572199. The next prime is 20572213. The reversal of 20572205 is 50227502.

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

It is a cyclic number.

It is not a de Polignac number, because 20572205 - 2¹⁶ = 20506669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1319 + ... + 6548.

It is an arithmetic number, because the mean of its divisors is an integer number (3092124).

Almost surely, 2^20572205 is an apocalyptic number.

It is an amenable number.

20572205 is a deficient number, since it is larger than the sum of its proper divisors (4164787).

20572205 is an equidigital number, since it uses as much as digits as its factorization.

20572205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8395.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 20572205 is about 4535.6592685077. The cubic root of 20572205 is about 274.0061314273.

Adding to 20572205 its reverse (50227502), we get a palindrome (70799707).

The spelling of 20572205 in words is "twenty million, five hundred seventy-two thousand, two hundred five".