728161827 has 8 divisors (see below), whose sum is σ = 971025600. Its totient is φ = 485369640.

The previous prime is 728161817. The next prime is 728161843.

728161827 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 728161827 - 2⁸ = 728161571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728161817) 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 7 ways as a sum of consecutive naturals, for example, 13924 + ... + 40622.

It is an arithmetic number, because the mean of its divisors is an integer number (121378200).

Almost surely, 2^728161827 is an apocalyptic number.

728161827 is a deficient number, since it is larger than the sum of its proper divisors (242863773).

728161827 is a wasteful number, since it uses less digits than its factorization.

728161827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35793.

The product of its digits is 75264, while the sum is 42.

The square root of 728161827 is about 26984.4738136581. The cubic root of 728161827 is about 899.6549405608.

The spelling of 728161827 in words is "seven hundred twenty-eight million, one hundred sixty-one thousand, eight hundred twenty-seven".