28688095 has 32 divisors (see below), whose sum is σ = 38320128. Its totient is φ = 20525568.

The previous prime is 28688089. The next prime is 28688111. The reversal of 28688095 is 59088682.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28688095 - 2³ = 28688087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171702 + ... + 171868.

It is an arithmetic number, because the mean of its divisors is an integer number (1197504).

Almost surely, 2^28688095 is an apocalyptic number.

28688095 is a deficient number, since it is larger than the sum of its proper divisors (9632033).

28688095 is a wasteful number, since it uses less digits than its factorization.

28688095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 28688095 is about 5356.1268655625. The cubic root of 28688095 is about 306.1262490429.

The spelling of 28688095 in words is "twenty-eight million, six hundred eighty-eight thousand, ninety-five".