12027838 has 4 divisors (see below), whose sum is σ = 18041760. Its totient is φ = 6013918.

The previous prime is 12027811. The next prime is 12027853. The reversal of 12027838 is 83872021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83872021 = 383 ⋅218987.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3006958 + ... + 3006961.

It is an arithmetic number, because the mean of its divisors is an integer number (4510440).

Almost surely, 2^12027838 is an apocalyptic number.

12027838 is a deficient number, since it is larger than the sum of its proper divisors (6013922).

12027838 is an equidigital number, since it uses as much as digits as its factorization.

12027838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6013921.

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

The square root of 12027838 is about 3468.1173567225. The cubic root of 12027838 is about 229.1197482056.

Adding to 12027838 its reverse (83872021), we get a palindrome (95899859).

The spelling of 12027838 in words is "twelve million, twenty-seven thousand, eight hundred thirty-eight".