27260981 has 4 divisors (see below), whose sum is σ = 29739264. Its totient is φ = 24782700.

The previous prime is 27260963. The next prime is 27260993. The reversal of 27260981 is 18906272.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27260981 - 2¹⁸ = 26998837 is a prime.

It is a super-2 number, since 2×27260981² = 1486322170164722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27260951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239125 + ... + 1239146.

It is an arithmetic number, because the mean of its divisors is an integer number (7434816).

Almost surely, 2^27260981 is an apocalyptic number.

It is an amenable number.

27260981 is a deficient number, since it is larger than the sum of its proper divisors (2478283).

27260981 is a wasteful number, since it uses less digits than its factorization.

27260981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478282.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 27260981 is about 5221.2049375599. The cubic root of 27260981 is about 300.9634985520.

The spelling of 27260981 in words is "twenty-seven million, two hundred sixty thousand, nine hundred eighty-one".