20814337 has 2 divisors, whose sum is σ = 20814338. Its totient is φ = 20814336.

The previous prime is 20814317. The next prime is 20814349. The reversal of 20814337 is 73341802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18671041 + 2143296 = 4321^2 + 1464^2 .

It is a cyclic number.

It is not a de Polignac number, because 20814337 - 2²³ = 12425729 is a prime.

It is not a weakly prime, because it can be changed into another prime (20814317) 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, 10407168 + 10407169.

It is an arithmetic number, because the mean of its divisors is an integer number (10407169).

Almost surely, 2^20814337 is an apocalyptic number.

It is an amenable number.

20814337 is a deficient number, since it is larger than the sum of its proper divisors (1).

20814337 is an equidigital number, since it uses as much as digits as its factorization.

20814337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20814337 is about 4562.2732272410. The cubic root of 20814337 is about 275.0769459614.

The spelling of 20814337 in words is "twenty million, eight hundred fourteen thousand, three hundred thirty-seven".