28079288 has 8 divisors (see below), whose sum is σ = 52648680. Its totient is φ = 14039640.

The previous prime is 28079281. The next prime is 28079327. The reversal of 28079288 is 88297082.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28079281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1754948 + ... + 1754963.

It is an arithmetic number, because the mean of its divisors is an integer number (6581085).

Almost surely, 2^28079288 is an apocalyptic number.

It is an amenable number.

28079288 is a deficient number, since it is larger than the sum of its proper divisors (24569392).

28079288 is a wasteful number, since it uses less digits than its factorization.

28079288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509917 (or 3509913 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 28079288 is about 5298.9893376001. The cubic root of 28079288 is about 303.9452521447.

The spelling of 28079288 in words is "twenty-eight million, seventy-nine thousand, two hundred eighty-eight".