12130388 has 12 divisors (see below), whose sum is σ = 21371700. Its totient is φ = 6024192.

The previous prime is 12130387. The next prime is 12130397. The reversal of 12130388 is 88303121.

It can be written as a sum of positive squares in 2 ways, for example, as 2815684 + 9314704 = 1678^2 + 3052^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130387) 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, 9581 + ... + 10772.

It is an arithmetic number, because the mean of its divisors is an integer number (1780975).

Almost surely, 2^12130388 is an apocalyptic number.

It is an amenable number.

12130388 is a deficient number, since it is larger than the sum of its proper divisors (9241312).

12130388 is a wasteful number, since it uses less digits than its factorization.

12130388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20506 (or 20504 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 12130388 is about 3482.8706550775. The cubic root of 12130388 is about 229.7690687785.

The spelling of 12130388 in words is "twelve million, one hundred thirty thousand, three hundred eighty-eight".