728394061 has 16 divisors (see below), whose sum is σ = 770515200. Its totient is φ = 687202560.

The previous prime is 728394059. The next prime is 728394083. The reversal of 728394061 is 160493827.

It is a cyclic number.

It is not a de Polignac number, because 728394061 - 2¹ = 728394059 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 (728394001) 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, 826341 + ... + 827221.

It is an arithmetic number, because the mean of its divisors is an integer number (48157200).

Almost surely, 2^728394061 is an apocalyptic number.

It is an amenable number.

728394061 is a deficient number, since it is larger than the sum of its proper divisors (42121139).

728394061 is a wasteful number, since it uses less digits than its factorization.

728394061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 728394061 is about 26988.7765747171. The cubic root of 728394061 is about 899.7505732669.

The spelling of 728394061 in words is "seven hundred twenty-eight million, three hundred ninety-four thousand, sixty-one".