20296229 has 2 divisors, whose sum is σ = 20296230. Its totient is φ = 20296228.

The previous prime is 20296219. The next prime is 20296231. The reversal of 20296229 is 92269202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20205025 + 91204 = 4495^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 20296229 - 2²⁰ = 19247653 is a prime.

Together with 20296231, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20296195 and 20296204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20296219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10148114 + 10148115.

It is an arithmetic number, because the mean of its divisors is an integer number (10148115).

Almost surely, 2^20296229 is an apocalyptic number.

It is an amenable number.

20296229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20296229 is an equidigital number, since it uses as much as digits as its factorization.

20296229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 20296229 is about 4505.1336273190. The cubic root of 20296229 is about 272.7753477507.

The spelling of 20296229 in words is "twenty million, two hundred ninety-six thousand, two hundred twenty-nine".