12129448 has 32 divisors (see below), whose sum is σ = 24120000. Its totient is φ = 5702400.

The previous prime is 12129419. The next prime is 12129473. The reversal of 12129448 is 84492121.

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, 30048 + ... + 30448.

It is an arithmetic number, because the mean of its divisors is an integer number (753750).

Almost surely, 2^12129448 is an apocalyptic number.

It is an amenable number.

12129448 is a deficient number, since it is larger than the sum of its proper divisors (11990552).

12129448 is a wasteful number, since it uses less digits than its factorization.

12129448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625 (or 621 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 12129448 is about 3482.7357063091. The cubic root of 12129448 is about 229.7631335876.

The spelling of 12129448 in words is "twelve million, one hundred twenty-nine thousand, four hundred forty-eight".