27018049 has 4 divisors (see below), whose sum is σ = 28607364. Its totient is φ = 25428736.

The previous prime is 27018023. The next prime is 27018067. The reversal of 27018049 is 94081072.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17139600 + 9878449 = 4140^2 + 3143^2 .

It is not a de Polignac number, because 27018049 - 2⁹ = 27017537 is a prime.

It is a super-4 number, since 4×27018049⁴ (a number of 31 digits) contains 4444 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 27018049.

It is not an unprimeable number, because it can be changed into a prime (27018349) 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, 794632 + ... + 794665.

It is an arithmetic number, because the mean of its divisors is an integer number (7151841).

Almost surely, 2^27018049 is an apocalyptic number.

It is an amenable number.

27018049 is a deficient number, since it is larger than the sum of its proper divisors (1589315).

27018049 is a wasteful number, since it uses less digits than its factorization.

27018049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589314.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 27018049 is about 5197.8888983894. Note that the first 4 decimals coincide. The cubic root of 27018049 is about 300.0668332581.

The spelling of 27018049 in words is "twenty-seven million, eighteen thousand, forty-nine".