12661292 has 36 divisors (see below), whose sum is σ = 26051760. Its totient is φ = 5274240.

The previous prime is 12661273. The next prime is 12661301. The reversal of 12661292 is 29216621.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46934 + ... + 47202.

It is an arithmetic number, because the mean of its divisors is an integer number (723660).

Almost surely, 2^12661292 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 12661292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13025880).

12661292 is an abundant number, since it is smaller than the sum of its proper divisors (13390468).

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

12661292 is a wasteful number, since it uses less digits than its factorization.

12661292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 319 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 12661292 is about 3558.2709284145. The cubic root of 12661292 is about 233.0733803393.

The spelling of 12661292 in words is "twelve million, six hundred sixty-one thousand, two hundred ninety-two".