20350215 has 12 divisors (see below), whose sum is σ = 35273784. Its totient is φ = 10853424.

The previous prime is 20350181. The next prime is 20350217. The reversal of 20350215 is 51205302.

It is a happy number.

It is not a de Polignac number, because 20350215 - 2⁷ = 20350087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20350217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226069 + ... + 226158.

It is an arithmetic number, because the mean of its divisors is an integer number (2939482).

Almost surely, 2^20350215 is an apocalyptic number.

20350215 is a deficient number, since it is larger than the sum of its proper divisors (14923569).

20350215 is a wasteful number, since it uses less digits than its factorization.

20350215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452238 (or 452235 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 20350215 is about 4511.1212575146. The cubic root of 20350215 is about 273.0169856195.

Adding to 20350215 its reverse (51205302), we get a palindrome (71555517).

The spelling of 20350215 in words is "twenty million, three hundred fifty thousand, two hundred fifteen".