20350205 has 8 divisors (see below), whose sum is σ = 24444504. Its totient is φ = 16264000.

The previous prime is 20350181. The next prime is 20350217. The reversal of 20350205 is 50205302.

It can be written as a sum of positive squares in 4 ways, for example, as 2524921 + 17825284 = 1589^2 + 4222^2 .

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

It is not a de Polignac number, because 20350205 - 2¹⁶ = 20284669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8435 + ... + 10575.

It is an arithmetic number, because the mean of its divisors is an integer number (3055563).

Almost surely, 2^20350205 is an apocalyptic number.

It is an amenable number.

20350205 is a deficient number, since it is larger than the sum of its proper divisors (4094299).

20350205 is a wasteful number, since it uses less digits than its factorization.

20350205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4047.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 20350205 is about 4511.1201491426. The cubic root of 20350205 is about 273.0169408997.

Adding to 20350205 its reverse (50205302), we get a palindrome (70555507).

The spelling of 20350205 in words is "twenty million, three hundred fifty thousand, two hundred five".