28351275 has 24 divisors (see below), whose sum is σ = 47650224. Its totient is φ = 14870400.

The previous prime is 28351259. The next prime is 28351277. The reversal of 28351275 is 57215382.

It is not a de Polignac number, because 28351275 - 2⁴ = 28351259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28351277) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1477 + ... + 7673.

It is an arithmetic number, because the mean of its divisors is an integer number (1985426).

Almost surely, 2^28351275 is an apocalyptic number.

28351275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28351275 is a deficient number, since it is larger than the sum of its proper divisors (19298949).

28351275 is a wasteful number, since it uses less digits than its factorization.

28351275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6271 (or 6266 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 28351275 is about 5324.5915336296. The cubic root of 28351275 is about 304.9234780707.

The spelling of 28351275 in words is "twenty-eight million, three hundred fifty-one thousand, two hundred seventy-five".