27706980 has 96 divisors (see below), whose sum is σ = 90881280. Its totient is φ = 6174720.

The previous prime is 27706967. The next prime is 27706999. The reversal of 27706980 is 8960772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16416 + ... + 18024.

It is an arithmetic number, because the mean of its divisors is an integer number (946680).

Almost surely, 2^27706980 is an apocalyptic number.

27706980 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 27706980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45440640).

27706980 is an abundant number, since it is smaller than the sum of its proper divisors (63174300).

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

27706980 is a wasteful number, since it uses less digits than its factorization.

27706980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669 (or 1667 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 27706980 is about 5263.7420149548. The cubic root of 27706980 is about 302.5959170368.

The spelling of 27706980 in words is "twenty-seven million, seven hundred six thousand, nine hundred eighty".