28452275 has 6 divisors (see below), whose sum is σ = 35280852. Its totient is φ = 22761800.

The previous prime is 28452269. The next prime is 28452293. The reversal of 28452275 is 57225482.

It is not a de Polignac number, because 28452275 - 2¹⁶ = 28386739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 569021 + ... + 569070.

It is an arithmetic number, because the mean of its divisors is an integer number (5880142).

Almost surely, 2^28452275 is an apocalyptic number.

28452275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28452275 is a deficient number, since it is larger than the sum of its proper divisors (6828577).

28452275 is a wasteful number, since it uses less digits than its factorization.

28452275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138101 (or 1138096 counting only the distinct ones).

The product of its digits is 44800, while the sum is 35.

The square root of 28452275 is about 5334.0673973995. The cubic root of 28452275 is about 305.2851404914.

The spelling of 28452275 in words is "twenty-eight million, four hundred fifty-two thousand, two hundred seventy-five".