728187061 has 16 divisors (see below), whose sum is σ = 919482624. Its totient is φ = 561901824.

The previous prime is 728187059. The next prime is 728187077. The reversal of 728187061 is 160781827.

728187061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 728187061 - 2¹ = 728187059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728187041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130290 + ... + 135763.

It is an arithmetic number, because the mean of its divisors is an integer number (57467664).

Almost surely, 2^728187061 is an apocalyptic number.

It is an amenable number.

728187061 is a deficient number, since it is larger than the sum of its proper divisors (191295563).

728187061 is a wasteful number, since it uses less digits than its factorization.

728187061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266100.

The product of its (nonzero) digits is 37632, while the sum is 40.

The square root of 728187061 is about 26984.9413747742. The cubic root of 728187061 is about 899.6653327702.

The spelling of 728187061 in words is "seven hundred twenty-eight million, one hundred eighty-seven thousand, sixty-one".