28071108 has 36 divisors (see below), whose sum is σ = 76417068. Its totient is φ = 8637120.

The previous prime is 28071107. The next prime is 28071119. The reversal of 28071108 is 80117082.

It can be written as a sum of positive squares in 2 ways, for example, as 4334724 + 23736384 = 2082^2 + 4872^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (28071103) 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 11 ways as a sum of consecutive naturals, for example, 29523 + ... + 30458.

Almost surely, 2^28071108 is an apocalyptic number.

It is an amenable number.

28071108 is an abundant number, since it is smaller than the sum of its proper divisors (48345960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28071108 is a wasteful number, since it uses less digits than its factorization.

28071108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60004 (or 59999 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 28071108 is about 5298.2174360817. The cubic root of 28071108 is about 303.9157343778.

The spelling of 28071108 in words is "twenty-eight million, seventy-one thousand, one hundred eight".