20486293 has 2 divisors, whose sum is σ = 20486294. Its totient is φ = 20486292.

The previous prime is 20486239. The next prime is 20486299. The reversal of 20486293 is 39268402.

Together with previous prime (20486239) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18464209 + 2022084 = 4297^2 + 1422^2 .

It is a cyclic number.

It is not a de Polignac number, because 20486293 - 2¹⁷ = 20355221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20486299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10243146 + 10243147.

It is an arithmetic number, because the mean of its divisors is an integer number (10243147).

Almost surely, 2^20486293 is an apocalyptic number.

It is an amenable number.

20486293 is a deficient number, since it is larger than the sum of its proper divisors (1).

20486293 is an equidigital number, since it uses as much as digits as its factorization.

20486293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 20486293 is about 4526.1786310308. The cubic root of 20486293 is about 273.6241717199.

The spelling of 20486293 in words is "twenty million, four hundred eighty-six thousand, two hundred ninety-three".