28088475 has 24 divisors (see below), whose sum is σ = 46663680. Its totient is φ = 14908320.

The previous prime is 28088461. The next prime is 28088483. The reversal of 28088475 is 57488082.

It is not a de Polignac number, because 28088475 - 2⁸ = 28088219 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 17142 + ... + 18708.

It is an arithmetic number, because the mean of its divisors is an integer number (1944320).

Almost surely, 2^28088475 is an apocalyptic number.

28088475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28088475 is a deficient number, since it is larger than the sum of its proper divisors (18575205).

28088475 is a wasteful number, since it uses less digits than its factorization.

28088475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819 (or 1814 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 42.

The square root of 28088475 is about 5299.8561301228. The cubic root of 28088475 is about 303.9783968663.

The spelling of 28088475 in words is "twenty-eight million, eighty-eight thousand, four hundred seventy-five".