12009492 has 72 divisors (see below), whose sum is σ = 34260800. Its totient is φ = 3635280.

The previous prime is 12009469. The next prime is 12009499. The reversal of 12009492 is 29490021.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12009499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12609 + ... + 13527.

Almost surely, 2^12009492 is an apocalyptic number.

12009492 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 12009492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17130400).

12009492 is an abundant number, since it is smaller than the sum of its proper divisors (22251308).

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

12009492 is a wasteful number, since it uses less digits than its factorization.

12009492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 12009492 is about 3465.4713965058. The cubic root of 12009492 is about 229.0031971992.

The spelling of 12009492 in words is "twelve million, nine thousand, four hundred ninety-two".