12028917 has 4 divisors (see below), whose sum is σ = 16038560. Its totient is φ = 8019276.

The previous prime is 12028901. The next prime is 12028937. The reversal of 12028917 is 71982021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71982021 = 3 ⋅23994007.

It is not a de Polignac number, because 12028917 - 2⁴ = 12028901 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 (12028937) 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, 2004817 + ... + 2004822.

It is an arithmetic number, because the mean of its divisors is an integer number (4009640).

Almost surely, 2^12028917 is an apocalyptic number.

It is an amenable number.

12028917 is a deficient number, since it is larger than the sum of its proper divisors (4009643).

12028917 is an equidigital number, since it uses as much as digits as its factorization.

12028917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009642.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12028917 is about 3468.2729131370. The cubic root of 12028917 is about 229.1265993348.

The spelling of 12028917 in words is "twelve million, twenty-eight thousand, nine hundred seventeen".