8728241 has 2 divisors, whose sum is σ = 8728242. Its totient is φ = 8728240.

The previous prime is 8728211. The next prime is 8728261. The reversal of 8728241 is 1428278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5193841 + 3534400 = 2279^2 + 1880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8728241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8728198 and 8728207.

It is not a weakly prime, because it can be changed into another prime (8728211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4364120 + 4364121.

It is an arithmetic number, because the mean of its divisors is an integer number (4364121).

Almost surely, 2^8728241 is an apocalyptic number.

It is an amenable number.

8728241 is a deficient number, since it is larger than the sum of its proper divisors (1).

8728241 is an equidigital number, since it uses as much as digits as its factorization.

8728241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7168, while the sum is 32.

The square root of 8728241 is about 2954.3596598925. The cubic root of 8728241 is about 205.8933135949.

The spelling of 8728241 in words is "eight million, seven hundred twenty-eight thousand, two hundred forty-one".