12990648 has 32 divisors (see below), whose sum is σ = 35429760. Its totient is φ = 3936480.

The previous prime is 12990647. The next prime is 12990667. The reversal of 12990648 is 84609921.

It is a super-3 number, since 3×12990648³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12990641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24340 + ... + 24867.

It is an arithmetic number, because the mean of its divisors is an integer number (1107180).

Almost surely, 2^12990648 is an apocalyptic number.

It is an amenable number.

12990648 is an abundant number, since it is smaller than the sum of its proper divisors (22439112).

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

12990648 is a wasteful number, since it uses less digits than its factorization.

12990648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49227 (or 49223 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 12990648 is about 3604.2541530808. The cubic root of 12990648 is about 235.0770714461.

The spelling of 12990648 in words is "twelve million, nine hundred ninety thousand, six hundred forty-eight".