728159 has 8 divisors (see below), whose sum is σ = 763392. Its totient is φ = 693720.

The previous prime is 728131. The next prime is 728173. The reversal of 728159 is 951827.

728159 = 138² + 139² + ... + 168².

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-728159 is a prime.

It is a Duffinian number.

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 728159.

It is not an unprimeable number, because it can be changed into a prime (728129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2432 + ... + 2714.

It is an arithmetic number, because the mean of its divisors is an integer number (95424).

2⁷²⁸¹⁵⁹ is an apocalyptic number.

728159 is a deficient number, since it is larger than the sum of its proper divisors (35233).

728159 is a wasteful number, since it uses less digits than its factorization.

728159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397.

The product of its digits is 5040, while the sum is 32.

The square root of 728159 is about 853.3223306582. The cubic root of 728159 is about 89.9653776292.

The spelling of 728159 in words is "seven hundred twenty-eight thousand, one hundred fifty-nine".