12091392 has 96 divisors (see below), whose sum is σ = 35782110. Its totient is φ = 3932160.

The previous prime is 12091381. The next prime is 12091411. The reversal of 12091392 is 29319021.

It can be written as a sum of positive squares in only one way, i.e., 11943936 + 147456 = 3456^2 + 384^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 294892 + ... + 294932.

Almost surely, 2^12091392 is an apocalyptic number.

12091392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12091392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17891055).

12091392 is an abundant number, since it is smaller than the sum of its proper divisors (23690718).

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

12091392 is an frugal number, since it uses more digits than its factorization.

12091392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 12091392 is about 3477.2678930448. The cubic root of 12091392 is about 229.5225888028.

It can be divided in two parts, 1209 and 1392, that added together give a square (2601 = 51²).

The spelling of 12091392 in words is "twelve million, ninety-one thousand, three hundred ninety-two".