728167 has 8 divisors (see below), whose sum is σ = 810000. Its totient is φ = 648960.

The previous prime is 728131. The next prime is 728173. The reversal of 728167 is 761827.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728267) by changing a digit.

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, 42 + ... + 1207.

It is an arithmetic number, because the mean of its divisors is an integer number (101250).

2⁷²⁸¹⁶⁷ is an apocalyptic number.

728167 is a deficient number, since it is larger than the sum of its proper divisors (81833).

728167 is a wasteful number, since it uses less digits than its factorization.

728167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313.

The product of its digits is 4704, while the sum is 31.

The square root of 728167 is about 853.3270182058. The cubic root of 728167 is about 89.9657070996.

The spelling of 728167 in words is "seven hundred twenty-eight thousand, one hundred sixty-seven".