728290249 has 2 divisors, whose sum is σ = 728290250. Its totient is φ = 728290248.

The previous prime is 728290231. The next prime is 728290261. The reversal of 728290249 is 942092827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 724417225 + 3873024 = 26915^2 + 1968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728290249 is a prime.

It is not a weakly prime, because it can be changed into another prime (728290289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364145124 + 364145125.

It is an arithmetic number, because the mean of its divisors is an integer number (364145125).

Almost surely, 2^728290249 is an apocalyptic number.

It is an amenable number.

728290249 is a deficient number, since it is larger than the sum of its proper divisors (1).

728290249 is an equidigital number, since it uses as much as digits as its factorization.

728290249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 728290249 is about 26986.8532622831. The cubic root of 728290249 is about 899.7078265591.

The spelling of 728290249 in words is "seven hundred twenty-eight million, two hundred ninety thousand, two hundred forty-nine".