28003088 has 10 divisors (see below), whose sum is σ = 54256014. Its totient is φ = 14001536.

The previous prime is 28003069. The next prime is 28003099. The reversal of 28003088 is 88030082.

It can be written as a sum of positive squares in only one way, i.e., 15272464 + 12730624 = 3908^2 + 3568^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28003088.

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 as a sum of consecutive naturals, namely, 875081 + ... + 875112.

Almost surely, 2^28003088 is an apocalyptic number.

It is an amenable number.

28003088 is a deficient number, since it is larger than the sum of its proper divisors (26252926).

28003088 is a wasteful number, since it uses less digits than its factorization.

28003088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750201 (or 1750195 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 28003088 is about 5291.7944026578. The cubic root of 28003088 is about 303.6700598567.

The spelling of 28003088 in words is "twenty-eight million, three thousand, eighty-eight".