728996111 has 4 divisors (see below), whose sum is σ = 729083232. Its totient is φ = 728908992.

The previous prime is 728996101. The next prime is 728996119. The reversal of 728996111 is 111699827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111699827 = 71 ⋅1573237.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728996111 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 (728996119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29495 + ... + 48248.

It is an arithmetic number, because the mean of its divisors is an integer number (182270808).

Almost surely, 2^728996111 is an apocalyptic number.

728996111 is a deficient number, since it is larger than the sum of its proper divisors (87121).

728996111 is an equidigital number, since it uses as much as digits as its factorization.

728996111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87120.

The product of its digits is 54432, while the sum is 44.

The square root of 728996111 is about 26999.9279813854. The cubic root of 728996111 is about 899.9983995856.

The spelling of 728996111 in words is "seven hundred twenty-eight million, nine hundred ninety-six thousand, one hundred eleven".