28250255 has 8 divisors (see below), whose sum is σ = 36982224. Its totient is φ = 20545600.

The previous prime is 28250249. The next prime is 28250267. The reversal of 28250255 is 55205282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28250255 - 2⁶ = 28250191 is a prime.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 256766 + ... + 256875.

It is an arithmetic number, because the mean of its divisors is an integer number (4622778).

Almost surely, 2^28250255 is an apocalyptic number.

28250255 is a deficient number, since it is larger than the sum of its proper divisors (8731969).

28250255 is a wasteful number, since it uses less digits than its factorization.

28250255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513657.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 28250255 is about 5315.0968946953. The cubic root of 28250255 is about 304.5608838184.

The spelling of 28250255 in words is "twenty-eight million, two hundred fifty thousand, two hundred fifty-five".