728126 has 8 divisors (see below), whose sum is σ = 1248240. Its totient is φ = 312048.

The previous prime is 728113. The next prime is 728129. The reversal of 728126 is 621827.

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

It is a junction number, because it is equal to n+sod(n) for n = 728095 and 728104.

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 728126.

It is not an unprimeable number, because it can be changed into a prime (728129) 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, 25991 + ... + 26018.

It is an arithmetic number, because the mean of its divisors is an integer number (156030).

2⁷²⁸¹²⁶ is an apocalyptic number.

728126 is a deficient number, since it is larger than the sum of its proper divisors (520114).

728126 is a wasteful number, since it uses less digits than its factorization.

728126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52018.

The product of its digits is 1344, while the sum is 26.

The square root of 728126 is about 853.3029942523. The cubic root of 728126 is about 89.9640185386.

The spelling of 728126 in words is "seven hundred twenty-eight thousand, one hundred twenty-six".