728262737 has 2 divisors, whose sum is σ = 728262738. Its totient is φ = 728262736.

The previous prime is 728262719. The next prime is 728262751. The reversal of 728262737 is 737262827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 494662081 + 233600656 = 22241^2 + 15284^2 .

It is a cyclic number.

It is not a de Polignac number, because 728262737 - 2⁸ = 728262481 is a prime.

It is a super-2 number, since 2×728262737² = 1060733228205462338, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (728262767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364131368 + 364131369.

It is an arithmetic number, because the mean of its divisors is an integer number (364131369).

Almost surely, 2^728262737 is an apocalyptic number.

It is an amenable number.

728262737 is a deficient number, since it is larger than the sum of its proper divisors (1).

728262737 is an equidigital number, since it uses as much as digits as its factorization.

728262737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 44.

The square root of 728262737 is about 26986.3435277920. The cubic root of 728262737 is about 899.6964972512.

The spelling of 728262737 in words is "seven hundred twenty-eight million, two hundred sixty-two thousand, seven hundred thirty-seven".