27771968 has 28 divisors (see below), whose sum is σ = 62983872. Its totient is φ = 11902080.

The previous prime is 27771923. The next prime is 27772007. The reversal of 27771968 is 86917772.

It is a tau number, because it is divible by the number of its divisors (28).

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, 30548 + ... + 31443.

It is an arithmetic number, because the mean of its divisors is an integer number (2249424).

Almost surely, 2^27771968 is an apocalyptic number.

27771968 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27771968 is an abundant number, since it is smaller than the sum of its proper divisors (35211904).

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

27771968 is an equidigital number, since it uses as much as digits as its factorization.

27771968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62010 (or 62000 counting only the distinct ones).

The product of its digits is 296352, while the sum is 47.

The square root of 27771968 is about 5269.9115742107. The cubic root of 27771968 is about 302.8323165328.

The spelling of 27771968 in words is "twenty-seven million, seven hundred seventy-one thousand, nine hundred sixty-eight".