20108097 has 6 divisors (see below), whose sum is σ = 29045042. Its totient is φ = 13405392.

The previous prime is 20108083. The next prime is 20108111. The reversal of 20108097 is 79080102.

It is an interprime number because it is at equal distance from previous prime (20108083) and next prime (20108111).

It can be written as a sum of positive squares in only one way, i.e., 20061441 + 46656 = 4479^2 + 216^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20108097 is a prime.

It is a super-2 number, since 2×20108097² = 808671129922818, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20108097.

It is not an unprimeable number, because it can be changed into a prime (20108017) 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 5 ways as a sum of consecutive naturals, for example, 1117108 + ... + 1117125.

Almost surely, 2^20108097 is an apocalyptic number.

It is an amenable number.

20108097 is a deficient number, since it is larger than the sum of its proper divisors (8936945).

20108097 is a wasteful number, since it uses less digits than its factorization.

20108097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234239 (or 2234236 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 20108097 is about 4484.2052807605. The cubic root of 20108097 is about 271.9299172456.

Adding to 20108097 its reverse (79080102), we get a palindrome (99188199).

The spelling of 20108097 in words is "twenty million, one hundred eight thousand, ninety-seven".