20392297 has 2 divisors, whose sum is σ = 20392298. Its totient is φ = 20392296.

The previous prime is 20392279. The next prime is 20392343. The reversal of 20392297 is 79229302.

Together with previous prime (20392279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13920361 + 6471936 = 3731^2 + 2544^2 .

It is a cyclic number.

It is not a de Polignac number, because 20392297 - 2²³ = 12003689 is a prime.

It is not a weakly prime, because it can be changed into another prime (20392247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10196148 + 10196149.

It is an arithmetic number, because the mean of its divisors is an integer number (10196149).

Almost surely, 2^20392297 is an apocalyptic number.

It is an amenable number.

20392297 is a deficient number, since it is larger than the sum of its proper divisors (1).

20392297 is an equidigital number, since it uses as much as digits as its factorization.

20392297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 20392297 is about 4515.7830993085. The cubic root of 20392297 is about 273.2050457207.

The spelling of 20392297 in words is "twenty million, three hundred ninety-two thousand, two hundred ninety-seven".