20238329 has 2 divisors, whose sum is σ = 20238330. Its totient is φ = 20238328.

The previous prime is 20238307. The next prime is 20238353. The reversal of 20238329 is 92383202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19598329 + 640000 = 4427^2 + 800^2 .

It is a cyclic number.

It is not a de Polignac number, because 20238329 - 2⁸ = 20238073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20238929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10119164 + 10119165.

It is an arithmetic number, because the mean of its divisors is an integer number (10119165).

Almost surely, 2^20238329 is an apocalyptic number.

It is an amenable number.

20238329 is a deficient number, since it is larger than the sum of its proper divisors (1).

20238329 is an equidigital number, since it uses as much as digits as its factorization.

20238329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 20238329 is about 4498.7030353203. The cubic root of 20238329 is about 272.5157143815.

The spelling of 20238329 in words is "twenty million, two hundred thirty-eight thousand, three hundred twenty-nine".