27671868 has 144 divisors (see below), whose sum is σ = 85612800. Its totient is φ = 7810992.

The previous prime is 27671863. The next prime is 27671899. The reversal of 27671868 is 86817672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27671863) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 333355 + ... + 333437.

Almost surely, 2^27671868 is an apocalyptic number.

27671868 is a gapful number since it is divisible by the number (28) 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 27671868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42806400).

27671868 is an abundant number, since it is smaller than the sum of its proper divisors (57940932).

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

27671868 is an equidigital number, since it uses as much as digits as its factorization.

27671868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 95 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 27671868 is about 5260.4056877773. The cubic root of 27671868 is about 302.4680402453.

The spelling of 27671868 in words is "twenty-seven million, six hundred seventy-one thousand, eight hundred sixty-eight".