728511853 has 2 divisors, whose sum is σ = 728511854. Its totient is φ = 728511852.

The previous prime is 728511803. The next prime is 728511859. The reversal of 728511853 is 358115827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 615684969 + 112826884 = 24813^2 + 10622^2 .

It is an emirp because it is prime and its reverse (358115827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 728511853 - 2¹³ = 728503661 is a prime.

It is a super-2 number, since 2×728511853² = 1061459039922987218, which contains 22 as substring.

It is equal to p_37651567 and since 728511853 and 37651567 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728511859) 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, 364255926 + 364255927.

It is an arithmetic number, because the mean of its divisors is an integer number (364255927).

Almost surely, 2^728511853 is an apocalyptic number.

It is an amenable number.

728511853 is a deficient number, since it is larger than the sum of its proper divisors (1).

728511853 is an equidigital number, since it uses as much as digits as its factorization.

728511853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 40.

The square root of 728511853 is about 26990.9587269515. The cubic root of 728511853 is about 899.7990716062.

The spelling of 728511853 in words is "seven hundred twenty-eight million, five hundred eleven thousand, eight hundred fifty-three".