20298413 has 2 divisors, whose sum is σ = 20298414. Its totient is φ = 20298412.

The previous prime is 20298401. The next prime is 20298427. The reversal of 20298413 is 31489202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19518724 + 779689 = 4418^2 + 883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20298413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20298013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10149206 + 10149207.

It is an arithmetic number, because the mean of its divisors is an integer number (10149207).

Almost surely, 2^20298413 is an apocalyptic number.

It is an amenable number.

20298413 is a deficient number, since it is larger than the sum of its proper divisors (1).

20298413 is an equidigital number, since it uses as much as digits as its factorization.

20298413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20298413 is about 4505.3760109451. The cubic root of 20298413 is about 272.7851315056.

The spelling of 20298413 in words is "twenty million, two hundred ninety-eight thousand, four hundred thirteen".