20304049 has 2 divisors, whose sum is σ = 20304050. Its totient is φ = 20304048.

The previous prime is 20304029. The next prime is 20304077. The reversal of 20304049 is 94040302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15210000 + 5094049 = 3900^2 + 2257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20304049 is a prime.

It is not a weakly prime, because it can be changed into another prime (20304029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10152024 + 10152025.

It is an arithmetic number, because the mean of its divisors is an integer number (10152025).

Almost surely, 2^20304049 is an apocalyptic number.

It is an amenable number.

20304049 is a deficient number, since it is larger than the sum of its proper divisors (1).

20304049 is an equidigital number, since it uses as much as digits as its factorization.

20304049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20304049 is about 4506.0014425209. The cubic root of 20304049 is about 272.8103760856.

The spelling of 20304049 in words is "twenty million, three hundred four thousand, forty-nine".