27049681 has 8 divisors (see below), whose sum is σ = 27453600. Its totient is φ = 26648160.

The previous prime is 27049667. The next prime is 27049717. The reversal of 27049681 is 18694072.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27049681 - 2¹³ = 27041489 is a prime.

It is a super-2 number, since 2×27049681² = 1463370484403522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27049681.

It is not an unprimeable number, because it can be changed into a prime (27049621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43390 + ... + 44008.

It is an arithmetic number, because the mean of its divisors is an integer number (3431700).

Almost surely, 2^27049681 is an apocalyptic number.

It is an amenable number.

27049681 is a deficient number, since it is larger than the sum of its proper divisors (403919).

27049681 is an equidigital number, since it uses as much as digits as its factorization.

27049681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 27049681 is about 5200.9307820812. The cubic root of 27049681 is about 300.1838909611.

It can be divided in two parts, 27049 and 681, that added together give a triangular number (27730 = T₂₃₅).

The spelling of 27049681 in words is "twenty-seven million, forty-nine thousand, six hundred eighty-one".