27884121 has 4 divisors (see below), whose sum is σ = 37178832. Its totient is φ = 18589412.

The previous prime is 27884117. The next prime is 27884123. The reversal of 27884121 is 12148872.

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 27884121 - 2² = 27884117 is a prime.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (27884123) 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, 4647351 + ... + 4647356.

It is an arithmetic number, because the mean of its divisors is an integer number (9294708).

Almost surely, 2^27884121 is an apocalyptic number.

It is an amenable number.

27884121 is a deficient number, since it is larger than the sum of its proper divisors (9294711).

27884121 is an equidigital number, since it uses as much as digits as its factorization.

27884121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9294710.

The product of its digits is 7168, while the sum is 33.

The square root of 27884121 is about 5280.5417335724. The cubic root of 27884121 is about 303.2394169126.

The spelling of 27884121 in words is "twenty-seven million, eight hundred eighty-four thousand, one hundred twenty-one".