20338197 has 16 divisors (see below), whose sum is σ = 30384192. Its totient is φ = 11992320.

The previous prime is 20338181. The next prime is 20338207. The reversal of 20338197 is 79183302.

It is not a de Polignac number, because 20338197 - 2⁴ = 20338181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20333197) 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, 7108 + ... + 9549.

It is an arithmetic number, because the mean of its divisors is an integer number (1899012).

Almost surely, 2^20338197 is an apocalyptic number.

It is an amenable number.

20338197 is a deficient number, since it is larger than the sum of its proper divisors (10045995).

20338197 is a wasteful number, since it uses less digits than its factorization.

20338197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16708.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 20338197 is about 4509.7890194553. The cubic root of 20338197 is about 272.9632308354.

The spelling of 20338197 in words is "twenty million, three hundred thirty-eight thousand, one hundred ninety-seven".