728995 has 4 divisors (see below), whose sum is σ = 874800. Its totient is φ = 583192.

The previous prime is 728993. The next prime is 729019. The reversal of 728995 is 599827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 599827 = 109 ⋅5503.

It is a cyclic number.

It is not a de Polignac number, because 728995 - 2¹ = 728993 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

728995 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72895 + ... + 72904.

It is an arithmetic number, because the mean of its divisors is an integer number (218700).

2⁷²⁸⁹⁹⁵ is an apocalyptic number.

728995 is a deficient number, since it is larger than the sum of its proper divisors (145805).

728995 is a wasteful number, since it uses less digits than its factorization.

728995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145804.

The product of its digits is 45360, while the sum is 40.

The square root of 728995 is about 853.8120402056. The cubic root of 728995 is about 89.9997942382. Note that the first 3 decimals are identical.

The spelling of 728995 in words is "seven hundred twenty-eight thousand, nine hundred ninety-five".