12261928 has 16 divisors (see below), whose sum is σ = 26275680. Its totient is φ = 5255088.

The previous prime is 12261919. The next prime is 12261941. The reversal of 12261928 is 82916221.

It is a self number, because there is not a number n which added to its sum of digits gives 12261928.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 109426 + ... + 109537.

It is an arithmetic number, because the mean of its divisors is an integer number (1642230).

Almost surely, 2^12261928 is an apocalyptic number.

It is an amenable number.

12261928 is an abundant number, since it is smaller than the sum of its proper divisors (14013752).

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

12261928 is a wasteful number, since it uses less digits than its factorization.

12261928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218976 (or 218972 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 12261928 is about 3501.7035853995. The cubic root of 12261928 is about 230.5966111260.

The spelling of 12261928 in words is "twelve million, two hundred sixty-one thousand, nine hundred twenty-eight".