20886329 has 2 divisors, whose sum is σ = 20886330. Its totient is φ = 20886328.

The previous prime is 20886289. The next prime is 20886361. The reversal of 20886329 is 92368802.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11916304 + 8970025 = 3452^2 + 2995^2 .

It is a cyclic number.

It is not a de Polignac number, because 20886329 - 2²⁴ = 4109113 is a prime.

It is a zygodrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 20886292 and 20886301.

It is not a weakly prime, because it can be changed into another prime (20886029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10443164 + 10443165.

It is an arithmetic number, because the mean of its divisors is an integer number (10443165).

Almost surely, 2^20886329 is an apocalyptic number.

It is an amenable number.

20886329 is a deficient number, since it is larger than the sum of its proper divisors (1).

20886329 is an equidigital number, since it uses as much as digits as its factorization.

20886329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 20886329 is about 4570.1563430587. The cubic root of 20886329 is about 275.3937236314.

The spelling of 20886329 in words is "twenty million, eight hundred eighty-six thousand, three hundred twenty-nine".