27766140 has 48 divisors (see below), whose sum is σ = 78916992. Its totient is φ = 7292736.

The previous prime is 27766139. The next prime is 27766157. The reversal of 27766140 is 4166772.

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, 567 + ... + 7473.

It is an arithmetic number, because the mean of its divisors is an integer number (1644104).

Almost surely, 2^27766140 is an apocalyptic number.

27766140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27766140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39458496).

27766140 is an abundant number, since it is smaller than the sum of its proper divisors (51150852).

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

27766140 is a wasteful number, since it uses less digits than its factorization.

27766140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6986 (or 6984 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 27766140 is about 5269.3585947438. The cubic root of 27766140 is about 302.8111317394.

The spelling of 27766140 in words is "twenty-seven million, seven hundred sixty-six thousand, one hundred forty".