12591992 has 32 divisors (see below), whose sum is σ = 27371520. Its totient is φ = 5318880.

The previous prime is 12591977. The next prime is 12592001. The reversal of 12591992 is 29919521.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 2393 + ... + 5559.

It is an arithmetic number, because the mean of its divisors is an integer number (855360).

Almost surely, 2^12591992 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 12591992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13685760).

12591992 is an abundant number, since it is smaller than the sum of its proper divisors (14779528).

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

12591992 is a wasteful number, since it uses less digits than its factorization.

12591992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251 (or 3247 counting only the distinct ones).

The product of its digits is 14580, while the sum is 38.

The square root of 12591992 is about 3548.5196913643. The cubic root of 12591992 is about 232.6473694757.

The spelling of 12591992 in words is "twelve million, five hundred ninety-one thousand, nine hundred ninety-two".