28114857 has 48 divisors (see below), whose sum is σ = 44815680. Its totient is φ = 17589312.

The previous prime is 28114847. The next prime is 28114873. The reversal of 28114857 is 75841182.

It is not a de Polignac number, because 28114857 - 2¹¹ = 28112809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28114837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 476494 + ... + 476552.

It is an arithmetic number, because the mean of its divisors is an integer number (933660).

Almost surely, 2^28114857 is an apocalyptic number.

28114857 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28114857 is a deficient number, since it is larger than the sum of its proper divisors (16700823).

28114857 is an equidigital number, since it uses as much as digits as its factorization.

28114857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 152 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 28114857 is about 5302.3444814535. The cubic root of 28114857 is about 304.0735372942.

The spelling of 28114857 in words is "twenty-eight million, one hundred fourteen thousand, eight hundred fifty-seven".