27741681 has 12 divisors (see below), whose sum is σ = 43714320. Its totient is φ = 16813080.

The previous prime is 27741677. The next prime is 27741713. The reversal of 27741681 is 18614772.

It is not a de Polignac number, because 27741681 - 2² = 27741677 is a prime.

It is a super-2 number, since 2×27741681² = 1539201729411522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27741281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140011 + ... + 140208.

It is an arithmetic number, because the mean of its divisors is an integer number (3642860).

Almost surely, 2^27741681 is an apocalyptic number.

It is an amenable number.

27741681 is a deficient number, since it is larger than the sum of its proper divisors (15972639).

27741681 is a wasteful number, since it uses less digits than its factorization.

27741681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280236 (or 280233 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 27741681 is about 5267.0372127032. The cubic root of 27741681 is about 302.7221908772.

The spelling of 27741681 in words is "twenty-seven million, seven hundred forty-one thousand, six hundred eighty-one".