728654 has 16 divisors (see below), whose sum is σ = 1198800. Its totient is φ = 330624.

The previous prime is 728647. The next prime is 728659. The reversal of 728654 is 456827.

It is a self number, because there is not a number n which added to its sum of digits gives 728654.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 728654.

It is not an unprimeable number, because it can be changed into a prime (728659) by changing a digit.

728654 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 617 + ... + 1355.

It is an arithmetic number, because the mean of its divisors is an integer number (74925).

2⁷²⁸⁶⁵⁴ is an apocalyptic number.

728654 is a deficient number, since it is larger than the sum of its proper divisors (470146).

728654 is a wasteful number, since it uses less digits than its factorization.

728654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787.

The product of its digits is 13440, while the sum is 32.

The square root of 728654 is about 853.6123241847. The cubic root of 728654 is about 89.9857590636.

The spelling of 728654 in words is "seven hundred twenty-eight thousand, six hundred fifty-four".