12028871 has 4 divisors (see below), whose sum is σ = 12065544. Its totient is φ = 11992200.

The previous prime is 12028859. The next prime is 12028897. The reversal of 12028871 is 17882021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17882021 = 19 ⋅941159.

It is a cyclic number.

It is not a de Polignac number, because 12028871 - 2¹⁴ = 12012487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12028801) 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, 17840 + ... + 18501.

It is an arithmetic number, because the mean of its divisors is an integer number (3016386).

Almost surely, 2^12028871 is an apocalyptic number.

12028871 is a deficient number, since it is larger than the sum of its proper divisors (36673).

12028871 is an equidigital number, since it uses as much as digits as its factorization.

12028871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36672.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 12028871 is about 3468.2662815880. The cubic root of 12028871 is about 229.1263072654.

The spelling of 12028871 in words is "twelve million, twenty-eight thousand, eight hundred seventy-one".