27828255 has 128 divisors (see below), whose sum is σ = 61286400. Its totient is φ = 10450944.

The previous prime is 27828211. The next prime is 27828289. The reversal of 27828255 is 55282872.

It is a happy number.

It is not a de Polignac number, because 27828255 - 2¹³ = 27820063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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 in 127 ways as a sum of consecutive naturals, for example, 752097 + ... + 752133.

It is an arithmetic number, because the mean of its divisors is an integer number (478800).

Almost surely, 2^27828255 is an apocalyptic number.

27828255 is an abundant number, since it is smaller than the sum of its proper divisors (33458145).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27828255 is a wasteful number, since it uses less digits than its factorization.

27828255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113.

The product of its digits is 89600, while the sum is 39.

The square root of 27828255 is about 5275.2492832093. The cubic root of 27828255 is about 303.0367675323.

The spelling of 27828255 in words is "twenty-seven million, eight hundred twenty-eight thousand, two hundred fifty-five".