27609980 has 12 divisors (see below), whose sum is σ = 57981000. Its totient is φ = 11043984.

The previous prime is 27609977. The next prime is 27609991. The reversal of 27609980 is 8990672.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690230 + ... + 690269.

It is an arithmetic number, because the mean of its divisors is an integer number (4831750).

Almost surely, 2^27609980 is an apocalyptic number.

27609980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27609980 is an abundant number, since it is smaller than the sum of its proper divisors (30371020).

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

27609980 is a wasteful number, since it uses less digits than its factorization.

27609980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380508 (or 1380506 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 27609980 is about 5254.5199590448. The cubic root of 27609980 is about 302.2423824939.

The spelling of 27609980 in words is "twenty-seven million, six hundred nine thousand, nine hundred eighty".