32728006 has 4 divisors (see below), whose sum is σ = 49092012. Its totient is φ = 16364002.

The previous prime is 32728001. The next prime is 32728019. The reversal of 32728006 is 60082723.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60082723 = 73 ⋅823051.

It is a super-2 number, since 2×32728006² = 2142244753472072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32728001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8182000 + ... + 8182003.

It is an arithmetic number, because the mean of its divisors is an integer number (12273003).

Almost surely, 2^32728006 is an apocalyptic number.

32728006 is a deficient number, since it is larger than the sum of its proper divisors (16364006).

32728006 is a wasteful number, since it uses less digits than its factorization.

32728006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16364005.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 32728006 is about 5720.8396236916. The cubic root of 32728006 is about 319.8697581960.

The spelling of 32728006 in words is "thirty-two million, seven hundred twenty-eight thousand, six".