27532981 has 8 divisors (see below), whose sum is σ = 31693760. Its totient is φ = 23429088.

The previous prime is 27532963. The next prime is 27532993. The reversal of 27532981 is 18923572.

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 27532981 - 2⁵ = 27532949 is a prime.

It is a super-2 number, since 2×27532981² = 1516130085492722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27532981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27532931) 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 7 ways as a sum of consecutive naturals, for example, 13176 + ... + 15121.

It is an arithmetic number, because the mean of its divisors is an integer number (3961720).

Almost surely, 2^27532981 is an apocalyptic number.

It is an amenable number.

27532981 is a deficient number, since it is larger than the sum of its proper divisors (4160779).

27532981 is a wasteful number, since it uses less digits than its factorization.

27532981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28443.

The product of its digits is 30240, while the sum is 37.

The square root of 27532981 is about 5247.1879135400. The cubic root of 27532981 is about 301.9611553331.

The spelling of 27532981 in words is "twenty-seven million, five hundred thirty-two thousand, nine hundred eighty-one".