20373247 has 2 divisors, whose sum is σ = 20373248. Its totient is φ = 20373246.

The previous prime is 20373229. The next prime is 20373289. The reversal of 20373247 is 74237302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20373247 - 2¹¹ = 20371199 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20374247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10186623 + 10186624.

It is an arithmetic number, because the mean of its divisors is an integer number (10186624).

Almost surely, 2^20373247 is an apocalyptic number.

20373247 is a deficient number, since it is larger than the sum of its proper divisors (1).

20373247 is an equidigital number, since it uses as much as digits as its factorization.

20373247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 20373247 is about 4513.6733377594. The cubic root of 20373247 is about 273.1199453252.

The spelling of 20373247 in words is "twenty million, three hundred seventy-three thousand, two hundred forty-seven".