12109284 has 48 divisors (see below), whose sum is σ = 34251840. Its totient is φ = 3669120.

The previous prime is 12109283. The next prime is 12109303. The reversal of 12109284 is 48290121.

12109284 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 Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12109283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3909 + ... + 6284.

It is an arithmetic number, because the mean of its divisors is an integer number (713580).

Almost surely, 2^12109284 is an apocalyptic number.

It is an amenable number.

12109284 is an abundant number, since it is smaller than the sum of its proper divisors (22142556).

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

12109284 is a wasteful number, since it uses less digits than its factorization.

12109284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10217 (or 10209 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 12109284 is about 3479.8396514782. The cubic root of 12109284 is about 229.6357435237.

The spelling of 12109284 in words is "twelve million, one hundred nine thousand, two hundred eighty-four".