20350005 has 32 divisors (see below), whose sum is σ = 35535360. Its totient is φ = 9884160.

The previous prime is 20349997. The next prime is 20350049. The reversal of 20350005 is 50005302.

It is not a de Polignac number, because 20350005 - 2³ = 20349997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 14745 + ... + 16065.

It is an arithmetic number, because the mean of its divisors is an integer number (1110480).

Almost surely, 2^20350005 is an apocalyptic number.

It is an amenable number.

20350005 is a deficient number, since it is larger than the sum of its proper divisors (15185355).

20350005 is a wasteful number, since it uses less digits than its factorization.

20350005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421.

The product of its (nonzero) digits is 150, while the sum is 15.

The square root of 20350005 is about 4511.0979816448. The cubic root of 20350005 is about 273.0160465014.

Adding to 20350005 its reverse (50005302), we get a palindrome (70355307).

The spelling of 20350005 in words is "twenty million, three hundred fifty thousand, five".