728451 has 12 divisors (see below), whose sum is σ = 1088880. Its totient is φ = 468720.

The previous prime is 728437. The next prime is 728471. The reversal of 728451 is 154827.

728451 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 728451 - 2⁹ = 727939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1135 + ... + 1656.

It is an arithmetic number, because the mean of its divisors is an integer number (90740).

2⁷²⁸⁴⁵¹ is an apocalyptic number.

728451 is a deficient number, since it is larger than the sum of its proper divisors (360429).

728451 is a wasteful number, since it uses less digits than its factorization.

728451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826 (or 2823 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 728451 is about 853.4934094649. The cubic root of 728451 is about 89.9774017336.

The spelling of 728451 in words is "seven hundred twenty-eight thousand, four hundred fifty-one".