28707206 has 16 divisors (see below), whose sum is σ = 47225808. Its totient is φ = 12979200.

The previous prime is 28707179. The next prime is 28707229. The reversal of 28707206 is 60270782.

It is a congruent number.

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, 866 + ... + 7626.

It is an arithmetic number, because the mean of its divisors is an integer number (2951613).

Almost surely, 2^28707206 is an apocalyptic number.

28707206 is a deficient number, since it is larger than the sum of its proper divisors (18518602).

28707206 is a wasteful number, since it uses less digits than its factorization.

28707206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6967.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 28707206 is about 5357.9106002247. The cubic root of 28707206 is about 306.1942108011.

Adding to 28707206 its reverse (60270782), we get a palindrome (88977988).

The spelling of 28707206 in words is "twenty-eight million, seven hundred seven thousand, two hundred six".