12081648 has 20 divisors (see below), whose sum is σ = 31211048. Its totient is φ = 4027200.

The previous prime is 12081631. The next prime is 12081653. The reversal of 12081648 is 84618021.

12081648 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125803 + ... + 125898.

Almost surely, 2^12081648 is an apocalyptic number.

It is an amenable number.

12081648 is an abundant number, since it is smaller than the sum of its proper divisors (19129400).

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

12081648 is a wasteful number, since it uses less digits than its factorization.

12081648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251712 (or 251706 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 12081648 is about 3475.8665106704. The cubic root of 12081648 is about 229.4609176808.

Adding to 12081648 its reverse (84618021), we get a palindrome (96699669).

The spelling of 12081648 in words is "twelve million, eighty-one thousand, six hundred forty-eight".