728875545 has 16 divisors (see below), whose sum is σ = 1167401472. Its totient is φ = 388333440.

The previous prime is 728875529. The next prime is 728875559. The reversal of 728875545 is 545578827.

It is not a de Polignac number, because 728875545 - 2⁴ = 728875529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9652 + ... + 39381.

It is an arithmetic number, because the mean of its divisors is an integer number (72962592).

Almost surely, 2^728875545 is an apocalyptic number.

It is an amenable number.

728875545 is a deficient number, since it is larger than the sum of its proper divisors (438525927).

728875545 is a wasteful number, since it uses less digits than its factorization.

728875545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50032.

The product of its digits is 3136000, while the sum is 51.

The square root of 728875545 is about 26997.6951794037. The cubic root of 728875545 is about 899.9487810358.

The spelling of 728875545 in words is "seven hundred twenty-eight million, eight hundred seventy-five thousand, five hundred forty-five".