20898041 has 2 divisors, whose sum is σ = 20898042. Its totient is φ = 20898040.

The previous prime is 20897993. The next prime is 20898047. The reversal of 20898041 is 14089802.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13169641 + 7728400 = 3629^2 + 2780^2 .

It is a cyclic number.

It is not a de Polignac number, because 20898041 - 2¹⁸ = 20635897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20897989 and 20898007.

It is not a weakly prime, because it can be changed into another prime (20898047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10449020 + 10449021.

It is an arithmetic number, because the mean of its divisors is an integer number (10449021).

Almost surely, 2^20898041 is an apocalyptic number.

It is an amenable number.

20898041 is a deficient number, since it is larger than the sum of its proper divisors (1).

20898041 is an equidigital number, since it uses as much as digits as its factorization.

20898041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 20898041 is about 4571.4375200805. The cubic root of 20898041 is about 275.4451896501.

The spelling of 20898041 in words is "twenty million, eight hundred ninety-eight thousand, forty-one".