28676865 has 16 divisors (see below), whose sum is σ = 52437888. Its totient is φ = 13109376.

The previous prime is 28676861. The next prime is 28676873. The reversal of 28676865 is 56867682.

It is not a de Polignac number, because 28676865 - 2² = 28676861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28676861) 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 15 ways as a sum of consecutive naturals, for example, 136452 + ... + 136661.

It is an arithmetic number, because the mean of its divisors is an integer number (3277368).

Almost surely, 2^28676865 is an apocalyptic number.

It is an amenable number.

28676865 is a deficient number, since it is larger than the sum of its proper divisors (23761023).

28676865 is a wasteful number, since it uses less digits than its factorization.

28676865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273128.

The product of its digits is 967680, while the sum is 48.

The square root of 28676865 is about 5355.0784307982. The cubic root of 28676865 is about 306.0862992955.

The spelling of 28676865 in words is "twenty-eight million, six hundred seventy-six thousand, eight hundred sixty-five".