12961648 has 40 divisors (see below), whose sum is σ = 30216320. Its totient is φ = 5261760.

The previous prime is 12961621. The next prime is 12961657. The reversal of 12961648 is 84616921.

It is a happy number.

12961648 is digitally balanced in base 2, because in such base 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 7 ways as a sum of consecutive naturals, for example, 918 + ... + 5173.

It is an arithmetic number, because the mean of its divisors is an integer number (755408).

Almost surely, 2^12961648 is an apocalyptic number.

It is an amenable number.

12961648 is an abundant number, since it is smaller than the sum of its proper divisors (17254672).

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

12961648 is a wasteful number, since it uses less digits than its factorization.

12961648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6125 (or 6119 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 12961648 is about 3600.2288816129. The cubic root of 12961648 is about 234.9020143782.

The spelling of 12961648 in words is "twelve million, nine hundred sixty-one thousand, six hundred forty-eight".