32728066 has 16 divisors (see below), whose sum is σ = 58040640. Its totient is φ = 13542480.

The previous prime is 32728049. The next prime is 32728079. The reversal of 32728066 is 66082723.

It is a super-2 number, since 2×32728066² = 2142252608200712, which contains 22 as substring.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 39900 + ... + 40711.

It is an arithmetic number, because the mean of its divisors is an integer number (3627540).

Almost surely, 2^32728066 is an apocalyptic number.

32728066 is a deficient number, since it is larger than the sum of its proper divisors (25312574).

32728066 is a wasteful number, since it uses less digits than its factorization.

32728066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80649.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 32728066 is about 5720.8448676747. The cubic root of 32728066 is about 319.8699536674.

The spelling of 32728066 in words is "thirty-two million, seven hundred twenty-eight thousand, sixty-six".