12099472 has 120 divisors (see below), whose sum is σ = 31551552. Its totient is φ = 4435200.

The previous prime is 12099443. The next prime is 12099473. The reversal of 12099472 is 27499021.

It is a happy number.

12099472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12099473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198322 + ... + 198382.

Almost surely, 2^12099472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12099472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15775776).

12099472 is an abundant number, since it is smaller than the sum of its proper divisors (19452080).

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

12099472 is a wasteful number, since it uses less digits than its factorization.

12099472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 12099472 is about 3478.4295306934. The cubic root of 12099472 is about 229.5737031155.

The spelling of 12099472 in words is "twelve million, ninety-nine thousand, four hundred seventy-two".