728846311 has 4 divisors (see below), whose sum is σ = 739111824. Its totient is φ = 718580800.

The previous prime is 728846309. The next prime is 728846341. The reversal of 728846311 is 113648827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113648827 = 1447 ⋅78541.

It is a cyclic number.

It is not a de Polignac number, because 728846311 - 2¹ = 728846309 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 (728846341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5132650 + ... + 5132791.

It is an arithmetic number, because the mean of its divisors is an integer number (184777956).

Almost surely, 2^728846311 is an apocalyptic number.

728846311 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

728846311 is a deficient number, since it is larger than the sum of its proper divisors (10265513).

728846311 is a wasteful number, since it uses less digits than its factorization.

728846311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10265512.

The product of its digits is 64512, while the sum is 40.

The square root of 728846311 is about 26997.1537573871. The cubic root of 728846311 is about 899.9367490528.

The spelling of 728846311 in words is "seven hundred twenty-eight million, eight hundred forty-six thousand, three hundred eleven".