27036981 has 24 divisors (see below), whose sum is σ = 42076320. Its totient is φ = 16674336.

The previous prime is 27036941. The next prime is 27037007. The reversal of 27036981 is 18963072.

27036981 is a nontrivial binomial coefficient, being equal to C(7354, 2).

It is not a de Polignac number, because 27036981 - 2⁷ = 27036853 is a prime.

It is a super-2 number, since 2×27036981² = 1461996683188722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27036901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5515 + ... + 9191.

It is an arithmetic number, because the mean of its divisors is an integer number (1753180).

Almost surely, 2^27036981 is an apocalyptic number.

27036981 is the 7353-rd triangular number and also the 3677-th hexagonal number.

It is an amenable number.

27036981 is a deficient number, since it is larger than the sum of its proper divisors (15039339).

27036981 is a wasteful number, since it uses less digits than its factorization.

27036981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3745 (or 3742 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 27036981 is about 5199.7097034354. The cubic root of 27036981 is about 300.1369041813.

The spelling of 27036981 in words is "twenty-seven million, thirty-six thousand, nine hundred eighty-one".