728038543 has 4 divisors (see below), whose sum is σ = 728222400. Its totient is φ = 727854688.

The previous prime is 728038541. The next prime is 728038559. The reversal of 728038543 is 345830827.

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

It is a cyclic number.

It is not a de Polignac number, because 728038543 - 2¹ = 728038541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 728038496 and 728038505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728038541) 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, 85855 + ... + 93952.

It is an arithmetic number, because the mean of its divisors is an integer number (182055600).

Almost surely, 2^728038543 is an apocalyptic number.

728038543 is a deficient number, since it is larger than the sum of its proper divisors (183857).

728038543 is a wasteful number, since it uses less digits than its factorization.

728038543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183856.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 728038543 is about 26982.1893663209. The cubic root of 728038543 is about 899.6041646135.

The spelling of 728038543 in words is "seven hundred twenty-eight million, thirty-eight thousand, five hundred forty-three".