20692829 has 2 divisors, whose sum is σ = 20692830. Its totient is φ = 20692828.

The previous prime is 20692817. The next prime is 20692849. The reversal of 20692829 is 92829602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17724100 + 2968729 = 4210^2 + 1723^2 .

It is a cyclic number.

It is not a de Polignac number, because 20692829 - 2²⁰ = 19644253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20692792 and 20692801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20692849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10346414 + 10346415.

It is an arithmetic number, because the mean of its divisors is an integer number (10346415).

Almost surely, 2^20692829 is an apocalyptic number.

It is an amenable number.

20692829 is a deficient number, since it is larger than the sum of its proper divisors (1).

20692829 is an equidigital number, since it uses as much as digits as its factorization.

20692829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 20692829 is about 4548.9371286049. The cubic root of 20692829 is about 274.5406281139.

The spelling of 20692829 in words is "twenty million, six hundred ninety-two thousand, eight hundred twenty-nine".