28111106 has 8 divisors (see below), whose sum is σ = 44000064. Its totient is φ = 13444420.

The previous prime is 28111103. The next prime is 28111133. The reversal of 28111106 is 60111182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28111103) 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 in 3 ways as a sum of consecutive naturals, for example, 305510 + ... + 305601.

It is an arithmetic number, because the mean of its divisors is an integer number (5500008).

Almost surely, 2^28111106 is an apocalyptic number.

28111106 is a deficient number, since it is larger than the sum of its proper divisors (15888958).

28111106 is a wasteful number, since it uses less digits than its factorization.

28111106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611136.

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 28111106 is about 5301.9907581964. The cubic root of 28111106 is about 304.0600138326.

Adding to 28111106 its reverse (60111182), we get a palindrome (88222288).

The spelling of 28111106 in words is "twenty-eight million, one hundred eleven thousand, one hundred six".