728051635 has 4 divisors (see below), whose sum is σ = 873661968. Its totient is φ = 582441304.

The previous prime is 728051629. The next prime is 728051659. The reversal of 728051635 is 536150827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 536150827 = 677 ⋅791951.

It is a cyclic number.

It is not a de Polignac number, because 728051635 - 2⁷ = 728051507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 728051594 and 728051603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72805159 + ... + 72805168.

It is an arithmetic number, because the mean of its divisors is an integer number (218415492).

Almost surely, 2^728051635 is an apocalyptic number.

728051635 is a deficient number, since it is larger than the sum of its proper divisors (145610333).

728051635 is a wasteful number, since it uses less digits than its factorization.

728051635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145610332.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 728051635 is about 26982.4319697095. The cubic root of 728051635 is about 899.6095569778.

The spelling of 728051635 in words is "seven hundred twenty-eight million, fifty-one thousand, six hundred thirty-five".