185340728 has 8 divisors (see below), whose sum is σ = 347513880. Its totient is φ = 92670360.

The previous prime is 185340721. The next prime is 185340791. The reversal of 185340728 is 827043581.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 185340691 and 185340700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185340721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11583788 + ... + 11583803.

It is an arithmetic number, because the mean of its divisors is an integer number (43439235).

Almost surely, 2^185340728 is an apocalyptic number.

It is an amenable number.

185340728 is a deficient number, since it is larger than the sum of its proper divisors (162173152).

185340728 is a wasteful number, since it uses less digits than its factorization.

185340728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23167597 (or 23167593 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 185340728 is about 13613.9901571876. The cubic root of 185340728 is about 570.1515222496.

The spelling of 185340728 in words is "one hundred eighty-five million, three hundred forty thousand, seven hundred twenty-eight".