12130428 has 24 divisors (see below), whose sum is σ = 28839888. Its totient is φ = 3966976.

The previous prime is 12130411. The next prime is 12130441. The reversal of 12130428 is 82403121.

12130428 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8901 + ... + 10172.

It is an arithmetic number, because the mean of its divisors is an integer number (1201662).

Almost surely, 2^12130428 is an apocalyptic number.

It is an amenable number.

12130428 is an abundant number, since it is smaller than the sum of its proper divisors (16709460).

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

12130428 is a wasteful number, since it uses less digits than its factorization.

12130428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19133 (or 19131 counting only the distinct ones).

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

The square root of 12130428 is about 3482.8763974623. The cubic root of 12130428 is about 229.7693213330.

Adding to 12130428 its reverse (82403121), we get a palindrome (94533549).

The spelling of 12130428 in words is "twelve million, one hundred thirty thousand, four hundred twenty-eight".