730828 has 24 divisors (see below), whose sum is σ = 1498112. Its totient is φ = 305424.

The previous prime is 730823. The next prime is 730837. The reversal of 730828 is 828037.

It is a happy number.

730828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 730796 and 730805.

It is not an unprimeable number, because it can be changed into a prime (730823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901 + ... + 1507.

2⁷³⁰⁸²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 730828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749056).

730828 is an abundant number, since it is smaller than the sum of its proper divisors (767284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

730828 is a wasteful number, since it uses less digits than its factorization.

730828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 730828 is about 854.8847875591. The cubic root of 730828 is about 90.0751635471.

The spelling of 730828 in words is "seven hundred thirty thousand, eight hundred twenty-eight".