728831833 has 2 divisors, whose sum is σ = 728831834. Its totient is φ = 728831832.

The previous prime is 728831821. The next prime is 728831869. The reversal of 728831833 is 338138827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418120704 + 310711129 = 20448^2 + 17627^2 .

It is a cyclic number.

It is not a de Polignac number, because 728831833 - 2⁹ = 728831321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 728831833.

It is not a weakly prime, because it can be changed into another prime (728831813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364415916 + 364415917.

It is an arithmetic number, because the mean of its divisors is an integer number (364415917).

Almost surely, 2^728831833 is an apocalyptic number.

It is an amenable number.

728831833 is a deficient number, since it is larger than the sum of its proper divisors (1).

728831833 is an equidigital number, since it uses as much as digits as its factorization.

728831833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 728831833 is about 26996.8856166781. The cubic root of 728831833 is about 899.9307901512.

The spelling of 728831833 in words is "seven hundred twenty-eight million, eight hundred thirty-one thousand, eight hundred thirty-three".