20302197 has 8 divisors (see below), whose sum is σ = 27349056. Its totient is φ = 13395072.

The previous prime is 20302189. The next prime is 20302207. The reversal of 20302197 is 79120302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20302197 - 2³ = 20302189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34593 + ... + 35174.

It is an arithmetic number, because the mean of its divisors is an integer number (3418632).

Almost surely, 2^20302197 is an apocalyptic number.

It is an amenable number.

20302197 is a deficient number, since it is larger than the sum of its proper divisors (7046859).

20302197 is an equidigital number, since it uses as much as digits as its factorization.

20302197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69867.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 20302197 is about 4505.7959341275. The cubic root of 20302197 is about 272.8020811854.

Adding to 20302197 its reverse (79120302), we get a palindrome (99422499).

The spelling of 20302197 in words is "twenty million, three hundred two thousand, one hundred ninety-seven".