728001 has 16 divisors (see below), whose sum is σ = 1099200. Its totient is φ = 476064.

The previous prime is 727997. The next prime is 728003. The reversal of 728001 is 100827.

Added to its reverse (100827) it gives a triangular number (828828 = T₁₂₈₇).

728001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 728001 - 2² = 727997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1365 + ... + 1821.

It is an arithmetic number, because the mean of its divisors is an integer number (68700).

2⁷²⁸⁰⁰¹ is an apocalyptic number.

It is an amenable number.

728001 is a deficient number, since it is larger than the sum of its proper divisors (371199).

728001 is a wasteful number, since it uses less digits than its factorization.

728001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 728001 is about 853.2297463169. The cubic root of 728001 is about 89.9588700954.

Adding to 728001 its reverse (100827), we get a palindrome (828828).

The spelling of 728001 in words is "seven hundred twenty-eight thousand, one".