28013255 has 8 divisors (see below), whose sum is σ = 34524672. Its totient is φ = 21804768.

The previous prime is 28013233. The next prime is 28013261. The reversal of 28013255 is 55231082.

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

It is a cyclic number.

It is not a de Polignac number, because 28013255 - 2¹⁸ = 27751111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75527 + ... + 75896.

It is an arithmetic number, because the mean of its divisors is an integer number (4315584).

Almost surely, 2^28013255 is an apocalyptic number.

28013255 is a deficient number, since it is larger than the sum of its proper divisors (6511417).

28013255 is a wasteful number, since it uses less digits than its factorization.

28013255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151465.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 28013255 is about 5292.7549537079. The cubic root of 28013255 is about 303.7068062794.

The spelling of 28013255 in words is "twenty-eight million, thirteen thousand, two hundred fifty-five".