12123828 has 18 divisors (see below), whose sum is σ = 30646434. Its totient is φ = 4041264.

The previous prime is 12123817. The next prime is 12123857. The reversal of 12123828 is 82832121.

It can be written as a sum of positive squares in only one way, i.e., 11985444 + 138384 = 3462^2 + 372^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168351 + ... + 168422.

Almost surely, 2^12123828 is an apocalyptic number.

12123828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12123828 is an abundant number, since it is smaller than the sum of its proper divisors (18522606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123828 is a wasteful number, since it uses less digits than its factorization.

12123828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336783 (or 336778 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 12123828 is about 3481.9287758367. The cubic root of 12123828 is about 229.7276423245.

Adding to 12123828 its reverse (82832121), we get a palindrome (94955949).

The spelling of 12123828 in words is "twelve million, one hundred twenty-three thousand, eight hundred twenty-eight".