731828 has 6 divisors (see below), whose sum is σ = 1280706. Its totient is φ = 365912.

The previous prime is 731827. The next prime is 731831. The reversal of 731828 is 828137.

731828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 702244 + 29584 = 838^2 + 172^2 .

It is a super-3 number, since 3×731828³ = 1175840243332126656, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 731828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91475 + ... + 91482.

It is an arithmetic number, because the mean of its divisors is an integer number (213451).

2⁷³¹⁸²⁸ is an apocalyptic number.

It is an amenable number.

731828 is a deficient number, since it is larger than the sum of its proper divisors (548878).

731828 is a wasteful number, since it uses less digits than its factorization.

731828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182961 (or 182959 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 731828 is about 855.4694617577. The cubic root of 731828 is about 90.1162284357.

The spelling of 731828 in words is "seven hundred thirty-one thousand, eight hundred twenty-eight".