20896197 has 12 divisors (see below), whose sum is σ = 32410656. Its totient is φ = 11940600.

The previous prime is 20896171. The next prime is 20896243. The reversal of 20896197 is 79169802.

It is not a de Polignac number, because 20896197 - 2⁷ = 20896069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20891197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70929 + ... + 71222.

It is an arithmetic number, because the mean of its divisors is an integer number (2700888).

Almost surely, 2^20896197 is an apocalyptic number.

It is an amenable number.

20896197 is a deficient number, since it is larger than the sum of its proper divisors (11514459).

20896197 is a wasteful number, since it uses less digits than its factorization.

20896197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142168 (or 142161 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 20896197 is about 4571.2358285260. The cubic root of 20896197 is about 275.4370878401.

The spelling of 20896197 in words is "twenty million, eight hundred ninety-six thousand, one hundred ninety-seven".