27880123 has 4 divisors (see below), whose sum is σ = 28560168. Its totient is φ = 27200080.

The previous prime is 27880121. The next prime is 27880133. The reversal of 27880123 is 32108872.

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 27880123 - 2¹ = 27880121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27880121) 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, 339961 + ... + 340042.

It is an arithmetic number, because the mean of its divisors is an integer number (7140042).

Almost surely, 2^27880123 is an apocalyptic number.

27880123 is a deficient number, since it is larger than the sum of its proper divisors (680045).

27880123 is an equidigital number, since it uses as much as digits as its factorization.

27880123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680044.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 27880123 is about 5280.1631603578. The cubic root of 27880123 is about 303.2249234889.

Adding to 27880123 its reverse (32108872), we get a palindrome (59988995).

The spelling of 27880123 in words is "twenty-seven million, eight hundred eighty thousand, one hundred twenty-three".