28458875 has 8 divisors (see below), whose sum is σ = 35516832. Its totient is φ = 22767000.

The previous prime is 28458863. The next prime is 28458877. The reversal of 28458875 is 57885482.

It is not a de Polignac number, because 28458875 - 2¹⁰ = 28457851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28458877) 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 7 ways as a sum of consecutive naturals, for example, 113711 + ... + 113960.

It is an arithmetic number, because the mean of its divisors is an integer number (4439604).

Almost surely, 2^28458875 is an apocalyptic number.

28458875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28458875 is a deficient number, since it is larger than the sum of its proper divisors (7057957).

28458875 is an equidigital number, since it uses as much as digits as its factorization.

28458875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227686 (or 227676 counting only the distinct ones).

The product of its digits is 716800, while the sum is 47.

The square root of 28458875 is about 5334.6860263749. The cubic root of 28458875 is about 305.3087440656.

The spelling of 28458875 in words is "twenty-eight million, four hundred fifty-eight thousand, eight hundred seventy-five".