20300105 has 16 divisors (see below), whose sum is σ = 27914880. Its totient is φ = 13882752.

The previous prime is 20300101. The next prime is 20300117. The reversal of 20300105 is 50100302.

It is a cyclic number.

It is not a de Polignac number, because 20300105 - 2² = 20300101 is a prime.

It is a super-2 number, since 2×20300105² = 824188526022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20300101) 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 15 ways as a sum of consecutive naturals, for example, 21197 + ... + 22133.

It is an arithmetic number, because the mean of its divisors is an integer number (1744680).

Almost surely, 2^20300105 is an apocalyptic number.

It is an amenable number.

20300105 is a deficient number, since it is larger than the sum of its proper divisors (7614775).

20300105 is an equidigital number, since it uses as much as digits as its factorization.

20300105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 20300105 is about 4505.5637827024. The cubic root of 20300105 is about 272.7927107454.

Adding to 20300105 its reverse (50100302), we get a palindrome (70400407).

The spelling of 20300105 in words is "twenty million, three hundred thousand, one hundred five".