12139284 has 24 divisors (see below), whose sum is σ = 29302560. Its totient is φ = 3906784.

The previous prime is 12139277. The next prime is 12139289. The reversal of 12139284 is 48293121.

12139284 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 not an unprimeable number, because it can be changed into a prime (12139289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17094 + ... + 17789.

It is an arithmetic number, because the mean of its divisors is an integer number (1220940).

Almost surely, 2^12139284 is an apocalyptic number.

It is an amenable number.

12139284 is an abundant number, since it is smaller than the sum of its proper divisors (17163276).

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

12139284 is a wasteful number, since it uses less digits than its factorization.

12139284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34919 (or 34917 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 12139284 is about 3484.1475284494. The cubic root of 12139284 is about 229.8252232386.

The spelling of 12139284 in words is "twelve million, one hundred thirty-nine thousand, two hundred eighty-four".