20463229 has 2 divisors, whose sum is σ = 20463230. Its totient is φ = 20463228.

The previous prime is 20463221. The next prime is 20463239. The reversal of 20463229 is 92236402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19598329 + 864900 = 4427^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 20463229 - 2³ = 20463221 is a prime.

It is a super-2 number, since 2×20463229² = 837487482212882, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20463197 and 20463206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20463221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10231614 + 10231615.

It is an arithmetic number, because the mean of its divisors is an integer number (10231615).

Almost surely, 2^20463229 is an apocalyptic number.

It is an amenable number.

20463229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20463229 is an equidigital number, since it uses as much as digits as its factorization.

20463229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 20463229 is about 4523.6300688717. The cubic root of 20463229 is about 273.5214487644.

The spelling of 20463229 in words is "twenty million, four hundred sixty-three thousand, two hundred twenty-nine".