12012680 has 16 divisors (see below), whose sum is σ = 27028620. Its totient is φ = 4805056.

The previous prime is 12012677. The next prime is 12012743. The reversal of 12012680 is 8621021.

It can be written as a sum of positive squares in 2 ways, for example, as 9647236 + 2365444 = 3106^2 + 1538^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150119 + ... + 150198.

Almost surely, 2^12012680 is an apocalyptic number.

12012680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012680 is an abundant number, since it is smaller than the sum of its proper divisors (15015940).

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

12012680 is a wasteful number, since it uses less digits than its factorization.

12012680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300328 (or 300324 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 12012680 is about 3465.9313322684. The cubic root of 12012680 is about 229.0234588834.

The spelling of 12012680 in words is "twelve million, twelve thousand, six hundred eighty".