728267 has 2 divisors, whose sum is σ = 728268. Its totient is φ = 728266.

The previous prime is 728261. The next prime is 728269. The reversal of 728267 is 762827.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728267 is a prime.

Together with 728269, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 728267.

It is not a weakly prime, because it can be changed into another prime (728261) 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, 364133 + 364134.

It is an arithmetic number, because the mean of its divisors is an integer number (364134).

2⁷²⁸²⁶⁷ is an apocalyptic number.

728267 is a deficient number, since it is larger than the sum of its proper divisors (1).

728267 is an equidigital number, since it uses as much as digits as its factorization.

728267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 32.

The square root of 728267 is about 853.3856103779. The cubic root of 728267 is about 89.9698252753.

It can be divided in two parts, 728 and 267, that multiplied together give a triangular number (194376 = T₆₂₃).

The spelling of 728267 in words is "seven hundred twenty-eight thousand, two hundred sixty-seven".