728126837 has 2 divisors, whose sum is σ = 728126838. Its totient is φ = 728126836.

The previous prime is 728126827. The next prime is 728126843. The reversal of 728126837 is 738621827.

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., 374461201 + 353665636 = 19351^2 + 18806^2 .

It is a cyclic number.

It is not a de Polignac number, because 728126837 - 2¹⁰ = 728125813 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 (728126807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364063418 + 364063419.

It is an arithmetic number, because the mean of its divisors is an integer number (364063419).

Almost surely, 2^728126837 is an apocalyptic number.

It is an amenable number.

728126837 is a deficient number, since it is larger than the sum of its proper divisors (1).

728126837 is an equidigital number, since it uses as much as digits as its factorization.

728126837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 44.

The square root of 728126837 is about 26983.8254700849. The cubic root of 728126837 is about 899.6405301054.

The spelling of 728126837 in words is "seven hundred twenty-eight million, one hundred twenty-six thousand, eight hundred thirty-seven".