28082988 has 36 divisors (see below), whose sum is σ = 74725560. Its totient is φ = 8868096.

The previous prime is 28082981. The next prime is 28083001. The reversal of 28082988 is 88928082.

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 (28082981) 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, 19845 + ... + 21212.

It is an arithmetic number, because the mean of its divisors is an integer number (2075710).

Almost surely, 2^28082988 is an apocalyptic number.

It is an amenable number.

28082988 is an abundant number, since it is smaller than the sum of its proper divisors (46642572).

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

28082988 is a wasteful number, since it uses less digits than its factorization.

28082988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41086 (or 41081 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 28082988 is about 5299.3384492784. The cubic root of 28082988 is about 303.9586018189.

The spelling of 28082988 in words is "twenty-eight million, eighty-two thousand, nine hundred eighty-eight".