28076686 has 8 divisors (see below), whose sum is σ = 45943704. Its totient is φ = 12762120.

The previous prime is 28076683. The next prime is 28076717. The reversal of 28076686 is 68667082.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28076681) 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 in 3 ways as a sum of consecutive naturals, for example, 638085 + ... + 638128.

It is an arithmetic number, because the mean of its divisors is an integer number (5742963).

Almost surely, 2^28076686 is an apocalyptic number.

28076686 is a deficient number, since it is larger than the sum of its proper divisors (17867018).

28076686 is a wasteful number, since it uses less digits than its factorization.

28076686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276226.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 28076686 is about 5298.7438133958. The cubic root of 28076686 is about 303.9358633741.

The spelling of 28076686 in words is "twenty-eight million, seventy-six thousand, six hundred eighty-six".