27828155 has 8 divisors (see below), whose sum is σ = 33422112. Its totient is φ = 22243648.

The previous prime is 27828149. The next prime is 27828161. The reversal of 27828155 is 55182872.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27828149) and next prime (27828161).

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 27828155 - 2²⁰ = 26779579 is a prime.

It is a Duffinian 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, 10274 + ... + 12696.

It is an arithmetic number, because the mean of its divisors is an integer number (4177764).

Almost surely, 2^27828155 is an apocalyptic number.

27828155 is a deficient number, since it is larger than the sum of its proper divisors (5593957).

27828155 is a wasteful number, since it uses less digits than its factorization.

27828155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4725.

The product of its digits is 44800, while the sum is 38.

The square root of 27828155 is about 5275.2398049757. The cubic root of 27828155 is about 303.0364045473.

The spelling of 27828155 in words is "twenty-seven million, eight hundred twenty-eight thousand, one hundred fifty-five".