728588789 has 2 divisors, whose sum is σ = 728588790. Its totient is φ = 728588788.

The previous prime is 728588767. The next prime is 728588813. The reversal of 728588789 is 987885827.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 709316689 + 19272100 = 26633^2 + 4390^2 .

It is a cyclic number.

It is not a de Polignac number, because 728588789 - 2²⁸ = 460153333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728588759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364294394 + 364294395.

It is an arithmetic number, because the mean of its divisors is an integer number (364294395).

Almost surely, 2^728588789 is an apocalyptic number.

It is an amenable number.

728588789 is a deficient number, since it is larger than the sum of its proper divisors (1).

728588789 is an equidigital number, since it uses as much as digits as its factorization.

728588789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18063360, while the sum is 62.

The square root of 728588789 is about 26992.3839073173. The cubic root of 728588789 is about 899.8307455382.

The spelling of 728588789 in words is "seven hundred twenty-eight million, five hundred eighty-eight thousand, seven hundred eighty-nine".