12009776 has 20 divisors (see below), whose sum is σ = 23325144. Its totient is φ = 5990400.

The previous prime is 12009773. The next prime is 12009779. The reversal of 12009776 is 67790021.

It is an interprime number because it is at equal distance from previous prime (12009773) and next prime (12009779).

It is not an unprimeable number, because it can be changed into a prime (12009773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9671 + ... + 10841.

Almost surely, 2^12009776 is an apocalyptic number.

12009776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12009776 is a deficient number, since it is larger than the sum of its proper divisors (11315368).

12009776 is a wasteful number, since it uses less digits than its factorization.

12009776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820 (or 1814 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 12009776 is about 3465.5123719300. The cubic root of 12009776 is about 229.0050023379.

Adding to 12009776 its reverse (67790021), we get a palindrome (79799797).

The spelling of 12009776 in words is "twelve million, nine thousand, seven hundred seventy-six".