12123028 has 12 divisors (see below), whose sum is σ = 21239680. Its totient is φ = 6054552.

The previous prime is 12123019. The next prime is 12123029. The reversal of 12123028 is 82032121.

It is a junction number, because it is equal to n+sod(n) for n = 12122996 and 12123014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123029) 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, 6013 + ... + 7771.

Almost surely, 2^12123028 is an apocalyptic number.

It is an amenable number.

12123028 is a deficient number, since it is larger than the sum of its proper divisors (9116652).

12123028 is a wasteful number, since it uses less digits than its factorization.

12123028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486 (or 3484 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12123028 is about 3481.8138950840. The cubic root of 12123028 is about 229.7225892957.

Adding to 12123028 its reverse (82032121), we get a palindrome (94155149).

The spelling of 12123028 in words is "twelve million, one hundred twenty-three thousand, twenty-eight".