728790 has 32 divisors (see below), whose sum is σ = 1853280. Its totient is φ = 182784.

The previous prime is 728771. The next prime is 728809. The reversal of 728790 is 97827.

It is an interprime number because it is at equal distance from previous prime (728771) and next prime (728809).

It is a super-2 number, since 2×728790² = 1062269728200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

728790 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205 + ... + 1224.

It is an arithmetic number, because the mean of its divisors is an integer number (57915).

2⁷²⁸⁷⁹⁰ is an apocalyptic number.

728790 is an abundant number, since it is smaller than the sum of its proper divisors (1124490).

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

728790 is a wasteful number, since it uses less digits than its factorization.

728790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 728790 is about 853.6919819232. The cubic root of 728790 is about 89.9913571947.

The spelling of 728790 in words is "seven hundred twenty-eight thousand, seven hundred ninety".