28068878 has 8 divisors (see below), whose sum is σ = 43933968. Its totient is φ = 13424224.

The previous prime is 28068869. The next prime is 28068881. The reversal of 28068878 is 87886082.

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

It is a congruent number.

It is an unprimeable number.

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, 305051 + ... + 305142.

It is an arithmetic number, because the mean of its divisors is an integer number (5491746).

Almost surely, 2^28068878 is an apocalyptic number.

28068878 is a deficient number, since it is larger than the sum of its proper divisors (15865090).

28068878 is a wasteful number, since it uses less digits than its factorization.

28068878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610218.

The product of its (nonzero) digits is 344064, while the sum is 47.

The square root of 28068878 is about 5298.0069837629. The cubic root of 28068878 is about 303.9076863635.

The spelling of 28068878 in words is "twenty-eight million, sixty-eight thousand, eight hundred seventy-eight".