20320097 has 16 divisors (see below), whose sum is σ = 24806400. Its totient is φ = 16269120.

The previous prime is 20320073. The next prime is 20320103. The reversal of 20320097 is 79002302.

It is not a de Polignac number, because 20320097 - 2⁶ = 20320033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20320007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4679 + ... + 7907.

It is an arithmetic number, because the mean of its divisors is an integer number (1550400).

Almost surely, 2^20320097 is an apocalyptic number.

It is an amenable number.

20320097 is a deficient number, since it is larger than the sum of its proper divisors (4486303).

20320097 is a wasteful number, since it uses less digits than its factorization.

20320097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3296.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 20320097 is about 4507.7818270187. The cubic root of 20320097 is about 272.8822321633.

Adding to 20320097 its reverse (79002302), we get a palindrome (99322399).

The spelling of 20320097 in words is "twenty million, three hundred twenty thousand, ninety-seven".