728545827 has 4 divisors (see below), whose sum is σ = 971394440. Its totient is φ = 485697216.

The previous prime is 728545793. The next prime is 728545841.

728545827 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 728545827 - 2¹¹ = 728543779 is a prime.

It is a super-2 number, since 2×728545827² = 1061558044078227858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728545327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121424302 + ... + 121424307.

It is an arithmetic number, because the mean of its divisors is an integer number (242848610).

Almost surely, 2^728545827 is an apocalyptic number.

728545827 is a deficient number, since it is larger than the sum of its proper divisors (242848613).

728545827 is a wasteful number, since it uses less digits than its factorization.

728545827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242848612.

The product of its digits is 1254400, while the sum is 48.

The square root of 728545827 is about 26991.5880785107. The cubic root of 728545827 is about 899.8130587035.

The spelling of 728545827 in words is "seven hundred twenty-eight million, five hundred forty-five thousand, eight hundred twenty-seven".