20320106 has 4 divisors (see below), whose sum is σ = 30480162. Its totient is φ = 10160052.

The previous prime is 20320103. The next prime is 20320171. The reversal of 20320106 is 60102302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14025025 + 6295081 = 3745^2 + 2509^2 .

It is not an unprimeable number, because it can be changed into a prime (20320103) by changing a digit.

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 as a sum of consecutive naturals, namely, 5080025 + ... + 5080028.

Almost surely, 2^20320106 is an apocalyptic number.

20320106 is a deficient number, since it is larger than the sum of its proper divisors (10160056).

20320106 is a wasteful number, since it uses less digits than its factorization.

20320106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10160055.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 20320106 is about 4507.7828252923. The cubic root of 20320106 is about 272.8822724509.

Adding to 20320106 its reverse (60102302), we get a palindrome (80422408).

The spelling of 20320106 in words is "twenty million, three hundred twenty thousand, one hundred six".