27778112 has 56 divisors (see below), whose sum is σ = 58375296. Its totient is φ = 13088768.

The previous prime is 27778109. The next prime is 27778117. The reversal of 27778112 is 21187772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27778117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166253 + ... + 166419.

It is an arithmetic number, because the mean of its divisors is an integer number (1042416).

Almost surely, 2^27778112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27778112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29187648).

27778112 is an abundant number, since it is smaller than the sum of its proper divisors (30597184).

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

27778112 is a wasteful number, since it uses less digits than its factorization.

27778112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 305 counting only the distinct ones).

The product of its digits is 10976, while the sum is 35.

The square root of 27778112 is about 5270.4944739559. The cubic root of 27778112 is about 302.8546467780.

The spelling of 27778112 in words is "twenty-seven million, seven hundred seventy-eight thousand, one hundred twelve".