20388367 has 2 divisors, whose sum is σ = 20388368. Its totient is φ = 20388366.

The previous prime is 20388353. The next prime is 20388371. The reversal of 20388367 is 76388302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20388367 - 2¹¹ = 20386319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20388307) 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, 10194183 + 10194184.

It is an arithmetic number, because the mean of its divisors is an integer number (10194184).

Almost surely, 2^20388367 is an apocalyptic number.

20388367 is a deficient number, since it is larger than the sum of its proper divisors (1).

20388367 is an equidigital number, since it uses as much as digits as its factorization.

20388367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 20388367 is about 4515.3479378670. The cubic root of 20388367 is about 273.1874939165.

The spelling of 20388367 in words is "twenty million, three hundred eighty-eight thousand, three hundred sixty-seven".