728735051 has 8 divisors (see below), whose sum is σ = 797527344. Its totient is φ = 660366720.

The previous prime is 728735027. The next prime is 728735069. The reversal of 728735051 is 150537827.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 728735051 - 2¹⁴ = 728718667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 728734996 and 728735014.

It is not an unprimeable number, because it can be changed into a prime (728735851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102386 + ... + 109271.

It is an arithmetic number, because the mean of its divisors is an integer number (99690918).

Almost surely, 2^728735051 is an apocalyptic number.

728735051 is a deficient number, since it is larger than the sum of its proper divisors (68792293).

728735051 is a wasteful number, since it uses less digits than its factorization.

728735051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211981.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 728735051 is about 26995.0930911527. The cubic root of 728735051 is about 899.8909542781.

The spelling of 728735051 in words is "seven hundred twenty-eight million, seven hundred thirty-five thousand, fifty-one".