27790115 has 4 divisors (see below), whose sum is σ = 33348144. Its totient is φ = 22232088.

The previous prime is 27790093. The next prime is 27790127. The reversal of 27790115 is 51109772.

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

It is a cyclic number.

It is not a de Polignac number, because 27790115 - 2¹⁴ = 27773731 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2779007 + ... + 2779016.

It is an arithmetic number, because the mean of its divisors is an integer number (8337036).

Almost surely, 2^27790115 is an apocalyptic number.

27790115 is a deficient number, since it is larger than the sum of its proper divisors (5558029).

27790115 is an equidigital number, since it uses as much as digits as its factorization.

27790115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558028.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 27790115 is about 5271.6330486861. The cubic root of 27790115 is about 302.8982619436.

Adding to 27790115 its reverse (51109772), we get a palindrome (78899887).

The spelling of 27790115 in words is "twenty-seven million, seven hundred ninety thousand, one hundred fifteen".