28422275 has 12 divisors (see below), whose sum is σ = 40278672. Its totient is φ = 19489440.

The previous prime is 28422259. The next prime is 28422281. The reversal of 28422275 is 57222482.

It is not a de Polignac number, because 28422275 - 2⁴ = 28422259 is a prime.

It is an unprimeable number.

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, 81032 + ... + 81381.

It is an arithmetic number, because the mean of its divisors is an integer number (3356556).

Almost surely, 2^28422275 is an apocalyptic number.

28422275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28422275 is a deficient number, since it is larger than the sum of its proper divisors (11856397).

28422275 is a wasteful number, since it uses less digits than its factorization.

28422275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162430 (or 162425 counting only the distinct ones).

The product of its digits is 17920, while the sum is 32.

The square root of 28422275 is about 5331.2545427882. The cubic root of 28422275 is about 305.1778054890.

The spelling of 28422275 in words is "twenty-eight million, four hundred twenty-two thousand, two hundred seventy-five".