12009072 has 40 divisors (see below), whose sum is σ = 32850576. Its totient is φ = 3767296.

The previous prime is 12009071. The next prime is 12009073. The reversal of 12009072 is 27090021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12009071) and next prime (12009073).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12009071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6543 + ... + 8174.

Almost surely, 2^12009072 is an apocalyptic number.

12009072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12009072 is an abundant number, since it is smaller than the sum of its proper divisors (20841504).

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

12009072 is a wasteful number, since it uses less digits than its factorization.

12009072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14745 (or 14739 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 12009072 is about 3465.4107981594. The cubic root of 12009072 is about 229.0005275758. Note that the first 3 decimals are identical.

Adding to 12009072 its reverse (27090021), we get a palindrome (39099093).

The spelling of 12009072 in words is "twelve million, nine thousand, seventy-two".