728914 has 8 divisors (see below), whose sum is σ = 1098108. Its totient is φ = 362880.

The previous prime is 728911. The next prime is 728921. The reversal of 728914 is 419827.

It can be written as a sum of positive squares in 2 ways, for example, as 588289 + 140625 = 767^2 + 375^2 .

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

It is not an unprimeable number, because it can be changed into a prime (728911) 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 3 ways as a sum of consecutive naturals, for example, 87 + ... + 1210.

2⁷²⁸⁹¹⁴ is an apocalyptic number.

728914 is a deficient number, since it is larger than the sum of its proper divisors (369194).

728914 is a wasteful number, since it uses less digits than its factorization.

728914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580.

The product of its digits is 4032, while the sum is 31.

The square root of 728914 is about 853.7646045603. The cubic root of 728914 is about 89.9964607662.

The spelling of 728914 in words is "seven hundred twenty-eight thousand, nine hundred fourteen".