28003055 has 16 divisors (see below), whose sum is σ = 35532000. Its totient is φ = 21127680.

The previous prime is 28003037. The next prime is 28003069. The reversal of 28003055 is 55030082.

It is not a de Polignac number, because 28003055 - 2¹⁴ = 27986671 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28003055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26171 + ... + 27219.

It is an arithmetic number, because the mean of its divisors is an integer number (2220750).

Almost surely, 2^28003055 is an apocalyptic number.

28003055 is a deficient number, since it is larger than the sum of its proper divisors (7528945).

28003055 is a wasteful number, since it uses less digits than its factorization.

28003055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 28003055 is about 5291.7912846219. The cubic root of 28003055 is about 303.6699405708.

The spelling of 28003055 in words is "twenty-eight million, three thousand, fifty-five".