28386827 has 12 divisors (see below), whose sum is σ = 33228720. Its totient is φ = 24178896.

The previous prime is 28386823. The next prime is 28386851. The reversal of 28386827 is 72868382.

It is not a de Polignac number, because 28386827 - 2² = 28386823 is a prime.

It is a super-3 number, since 3×28386827³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28386823) 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 11 ways as a sum of consecutive naturals, for example, 6449 + ... + 9917.

It is an arithmetic number, because the mean of its divisors is an integer number (2769060).

Almost surely, 2^28386827 is an apocalyptic number.

28386827 is a deficient number, since it is larger than the sum of its proper divisors (4841893).

28386827 is a wasteful number, since it uses less digits than its factorization.

28386827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650 (or 3643 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 28386827 is about 5327.9289597366. The cubic root of 28386827 is about 305.0508810572.

The spelling of 28386827 in words is "twenty-eight million, three hundred eighty-six thousand, eight hundred twenty-seven".