12340128 has 48 divisors (see below), whose sum is σ = 32610816. Its totient is φ = 4085760.

The previous prime is 12340103. The next prime is 12340157. The reversal of 12340128 is 82104321.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×12340128³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18000 + ... + 18672.

It is an arithmetic number, because the mean of its divisors is an integer number (679392).

Almost surely, 2^12340128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12340128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16305408).

12340128 is an abundant number, since it is smaller than the sum of its proper divisors (20270688).

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

12340128 is a wasteful number, since it uses less digits than its factorization.

12340128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 12340128 is about 3512.8518329130. The cubic root of 12340128 is about 231.0857798776.

Adding to 12340128 its reverse (82104321), we get a palindrome (94444449).

The spelling of 12340128 in words is "twelve million, three hundred forty thousand, one hundred twenty-eight".