12087306 has 192 divisors, whose sum is σ = 37739520. Its totient is φ = 2799360.

The previous prime is 12087281. The next prime is 12087311. The reversal of 12087306 is 60378021.

It is a super-2 number, since 2×12087306² = 292205932675272, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12087306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 636165 + ... + 636183.

It is an arithmetic number, because the mean of its divisors is an integer number (196560).

Almost surely, 2^12087306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12087306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18869760).

12087306 is an abundant number, since it is smaller than the sum of its proper divisors (25652214).

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

12087306 is a wasteful number, since it uses less digits than its factorization.

12087306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 12087306 is about 3476.6803131723. The cubic root of 12087306 is about 229.4967319796.

The spelling of 12087306 in words is "twelve million, eighty-seven thousand, three hundred six".