11820027 has 4 divisors (see below), whose sum is σ = 15760040. Its totient is φ = 7880016.

The previous prime is 11820019. The next prime is 11820037. The reversal of 11820027 is 72002811.

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

It is not a de Polignac number, because 11820027 - 2³ = 11820019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11819985 and 11820012.

It is not an unprimeable number, because it can be changed into a prime (11820037) 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, 1970002 + ... + 1970007.

It is an arithmetic number, because the mean of its divisors is an integer number (3940010).

Almost surely, 2^11820027 is an apocalyptic number.

11820027 is a deficient number, since it is larger than the sum of its proper divisors (3940013).

11820027 is an equidigital number, since it uses as much as digits as its factorization.

11820027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940012.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 11820027 is about 3438.0266142076. The cubic root of 11820027 is about 227.7925359640.

Adding to 11820027 its reverse (72002811), we get a palindrome (83822838).

The spelling of 11820027 in words is "eleven million, eight hundred twenty thousand, twenty-seven".