728350 has 24 divisors (see below), whose sum is σ = 1549008. Its totient is φ = 249600.

The previous prime is 728333. The next prime is 728369. The reversal of 728350 is 53827.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 691 + ... + 1390.

It is an arithmetic number, because the mean of its divisors is an integer number (64542).

2⁷²⁸³⁵⁰ is an apocalyptic number.

728350 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

728350 is an abundant number, since it is smaller than the sum of its proper divisors (820658).

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

728350 is a wasteful number, since it uses less digits than its factorization.

728350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100 (or 2095 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 728350 is about 853.4342388257. The cubic root of 728350 is about 89.9732430748.

The spelling of 728350 in words is "seven hundred twenty-eight thousand, three hundred fifty".