728354 has 8 divisors (see below), whose sum is σ = 1191888. Its totient is φ = 331060.

The previous prime is 728333. The next prime is 728369. The reversal of 728354 is 453827.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

728354 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 3 ways as a sum of consecutive naturals, for example, 16532 + ... + 16575.

It is an arithmetic number, because the mean of its divisors is an integer number (148986).

2⁷²⁸³⁵⁴ is an apocalyptic number.

728354 is a deficient number, since it is larger than the sum of its proper divisors (463534).

728354 is a wasteful number, since it uses less digits than its factorization.

728354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33120.

The product of its digits is 6720, while the sum is 29.

The square root of 728354 is about 853.4365822954. The cubic root of 728354 is about 89.9734077815.

It can be divided in two parts, 7283 and 54, that added together give a palindrome (7337).

The spelling of 728354 in words is "seven hundred twenty-eight thousand, three hundred fifty-four".