20302897 has 2 divisors, whose sum is σ = 20302898. Its totient is φ = 20302896.

The previous prime is 20302853. The next prime is 20302907. The reversal of 20302897 is 79820302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13830961 + 6471936 = 3719^2 + 2544^2 .

It is a cyclic number.

It is not a de Polignac number, because 20302897 - 2¹¹ = 20300849 is a prime.

It is not a weakly prime, because it can be changed into another prime (20302817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151448 + 10151449.

It is an arithmetic number, because the mean of its divisors is an integer number (10151449).

Almost surely, 2^20302897 is an apocalyptic number.

It is an amenable number.

20302897 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302897 is an equidigital number, since it uses as much as digits as its factorization.

20302897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 20302897 is about 4505.8736111880. The cubic root of 20302897 is about 272.8052164662.

The spelling of 20302897 in words is "twenty million, three hundred two thousand, eight hundred ninety-seven".