728132641 has 2 divisors, whose sum is σ = 728132642. Its totient is φ = 728132640.

The previous prime is 728132633. The next prime is 728132659. The reversal of 728132641 is 146231827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 641102400 + 87030241 = 25320^2 + 9329^2 .

It is a cyclic number.

It is not a de Polignac number, because 728132641 - 2³ = 728132633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 728132597 and 728132606.

It is not a weakly prime, because it can be changed into another prime (728132341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364066320 + 364066321.

It is an arithmetic number, because the mean of its divisors is an integer number (364066321).

Almost surely, 2^728132641 is an apocalyptic number.

It is an amenable number.

728132641 is a deficient number, since it is larger than the sum of its proper divisors (1).

728132641 is an equidigital number, since it uses as much as digits as its factorization.

728132641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 728132641 is about 26983.9330157781. The cubic root of 728132641 is about 899.6429204856.

The spelling of 728132641 in words is "seven hundred twenty-eight million, one hundred thirty-two thousand, six hundred forty-one".