728199 has 6 divisors (see below), whose sum is σ = 1051856. Its totient is φ = 485460.

The previous prime is 728191. The next prime is 728207. The reversal of 728199 is 991827.

It is a happy number.

728199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (728191) and next prime (728207).

It is not a de Polignac number, because 728199 - 2³ = 728191 is a prime.

It is a super-3 number, since 3×728199³ = 1158434516833393797, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40447 + ... + 40464.

2⁷²⁸¹⁹⁹ is an apocalyptic number.

728199 is a deficient number, since it is larger than the sum of its proper divisors (323657).

728199 is a wasteful number, since it uses less digits than its factorization.

728199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80917 (or 80914 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 728199 is about 853.3457681386. The cubic root of 728199 is about 89.9670249568.

The spelling of 728199 in words is "seven hundred twenty-eight thousand, one hundred ninety-nine".