12990384 has 120 divisors (see below), whose sum is σ = 40622400. Its totient is φ = 3841920.

The previous prime is 12990371. The next prime is 12990403. The reversal of 12990384 is 48309921.

12990384 is digitally balanced in base 2, because in such base 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 (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93387 + ... + 93525.

It is an arithmetic number, because the mean of its divisors is an integer number (338520).

Almost surely, 2^12990384 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 12990384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20311200).

12990384 is an abundant number, since it is smaller than the sum of its proper divisors (27632016).

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

12990384 is a wasteful number, since it uses less digits than its factorization.

12990384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 12990384 is about 3604.2175295062. The cubic root of 12990384 is about 235.0754789988.

The spelling of 12990384 in words is "twelve million, nine hundred ninety thousand, three hundred eighty-four".