27820113 has 16 divisors (see below), whose sum is σ = 38438400. Its totient is φ = 17879040.

The previous prime is 27820103. The next prime is 27820127. The reversal of 27820113 is 31102872.

It is not a de Polignac number, because 27820113 - 2⁶ = 27820049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27820103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35793 + ... + 36561.

It is an arithmetic number, because the mean of its divisors is an integer number (2402400).

Almost surely, 2^27820113 is an apocalyptic number.

It is an amenable number.

27820113 is a deficient number, since it is larger than the sum of its proper divisors (10618287).

27820113 is a wasteful number, since it uses less digits than its factorization.

27820113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 27820113 is about 5274.4775096686. The cubic root of 27820113 is about 303.0072104505.

Adding to 27820113 its reverse (31102872), we get a palindrome (58922985).

The spelling of 27820113 in words is "twenty-seven million, eight hundred twenty thousand, one hundred thirteen".