12389772 has 24 divisors (see below), whose sum is σ = 29168496. Its totient is φ = 4092928.

The previous prime is 12389761. The next prime is 12389789. The reversal of 12389772 is 27798321.

12389772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12389772.

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, 3213 + ... + 5924.

It is an arithmetic number, because the mean of its divisors is an integer number (1215354).

Almost surely, 2^12389772 is an apocalyptic number.

12389772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12389772 is an abundant number, since it is smaller than the sum of its proper divisors (16778724).

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

12389772 is a wasteful number, since it uses less digits than its factorization.

12389772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9257 (or 9255 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 12389772 is about 3519.9107943242. The cubic root of 12389772 is about 231.3952491924.

The spelling of 12389772 in words is "twelve million, three hundred eighty-nine thousand, seven hundred seventy-two".