27861117 has 8 divisors (see below), whose sum is σ = 37176096. Its totient is φ = 18560112.

The previous prime is 27861103. The next prime is 27861139. The reversal of 27861117 is 71116872.

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

It is not a de Polignac number, because 27861117 - 2¹⁵ = 27828349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27861187) 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, 2763 + ... + 7959.

It is an arithmetic number, because the mean of its divisors is an integer number (4647012).

Almost surely, 2^27861117 is an apocalyptic number.

It is an amenable number.

27861117 is a deficient number, since it is larger than the sum of its proper divisors (9314979).

27861117 is a wasteful number, since it uses less digits than its factorization.

27861117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6987.

The product of its digits is 4704, while the sum is 33.

The square root of 27861117 is about 5278.3630985373. The cubic root of 27861117 is about 303.1560045801.

Adding to 27861117 its reverse (71116872), we get a palindrome (98977989).

The spelling of 27861117 in words is "twenty-seven million, eight hundred sixty-one thousand, one hundred seventeen".